Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Preferred Stock Summary (Details)

v3.10.0.1
Shareholders' Equity - Preferred Stock Summary (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 12 Months Ended
Jul. 24, 2018
May 16, 2018
Mar. 15, 2018
Aug. 24, 2017
Sep. 30, 2011
Dec. 31, 2018
Dec. 31, 2017
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           3,843,140 3,837,683
Issuance costs and certain adjustments           $ (324)  
Total           $ 22,326  
Series B Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           7,110  
Liquidation Preference per Share (in dollars per share)           $ 100  
Carrying Value           $ 1  
Per Annum Dividend Rate           7.00%  
Dividend per Share (in dollars per share)           $ 7.00  
Annual Dividend           $ 0  
Series E Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           12,691  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 317  
Dividend per Share (in dollars per share)           $ 1.01  
Annual Dividend           $ 13  
Minimum interest rate per annum           4.00%  
Ownership interest in a share of preferred stock           0.10%  
Series F Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           1,409  
Liquidation Preference per Share (in dollars per share)           $ 100,000  
Carrying Value           $ 141  
Dividend per Share (in dollars per share)           $ 4,055.56  
Annual Dividend           $ 6  
Minimum interest rate per annum           4.00%  
Series G Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           4,926  
Liquidation Preference per Share (in dollars per share)           $ 100,000  
Carrying Value           $ 493  
Dividend per Share (in dollars per share)           $ 4,055.56  
Annual Dividend           $ 20  
Minimum interest rate per annum           4.00%  
Series L Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           3,080,182  
Liquidation Preference per Share (in dollars per share)           $ 1,000  
Carrying Value           $ 3,080  
Per Annum Dividend Rate           7.25%  
Dividend per Share (in dollars per share)           $ 72.50  
Annual Dividend           $ 223  
Series T Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           354  
Liquidation Preference per Share (in dollars per share)           $ 100,000  
Carrying Value           $ 35  
Per Annum Dividend Rate       6.00% 6.00% 6.00%  
Dividend per Share (in dollars per share)           $ 6,000.00  
Annual Dividend           $ 2  
Series U Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           40,000  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 1,000  
Per Annum Dividend Rate           5.20%  
Dividend per Share (in dollars per share)           $ 52.00  
Annual Dividend           $ 52  
Ownership interest in a share of preferred stock           4.00%  
Series V Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           60,000  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 1,500  
Per Annum Dividend Rate           5.125%  
Dividend per Share (in dollars per share)           $ 51.25  
Annual Dividend           $ 77  
Ownership interest in a share of preferred stock           4.00%  
Series W Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           44,000  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 1,100  
Per Annum Dividend Rate           6.625%  
Dividend per Share (in dollars per share)           $ 1.66  
Annual Dividend           $ 73  
Ownership interest in a share of preferred stock           0.10%  
Series X Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           80,000  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 2,000  
Per Annum Dividend Rate           6.25%  
Dividend per Share (in dollars per share)           $ 62.50  
Annual Dividend           $ 125  
Ownership interest in a share of preferred stock           4.00%  
Series Y Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           44,000  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 1,100  
Per Annum Dividend Rate           6.50%  
Dividend per Share (in dollars per share)           $ 1.63  
Annual Dividend           $ 72  
Ownership interest in a share of preferred stock           0.10%  
Series Z Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           56,000  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 1,400  
Per Annum Dividend Rate           6.50%  
Dividend per Share (in dollars per share)           $ 65.00  
Annual Dividend           $ 91  
Ownership interest in a share of preferred stock           4.00%  
Series AA Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           76,000  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 1,900  
Per Annum Dividend Rate           6.10%  
Dividend per Share (in dollars per share)           $ 61.00  
Annual Dividend           $ 116  
Ownership interest in a share of preferred stock           4.00%  
Series CC Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           44,000  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 1,100  
Per Annum Dividend Rate           6.20%  
Dividend per Share (in dollars per share)           $ 1.55  
Annual Dividend           $ 68  
Ownership interest in a share of preferred stock           0.10%  
Series DD Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           40,000  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 1,000  
Per Annum Dividend Rate           6.30%  
Dividend per Share (in dollars per share)           $ 63.00  
Annual Dividend           $ 63  
Ownership interest in a share of preferred stock           4.00%  
Series EE Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           36,000  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 900  
Per Annum Dividend Rate           6.00%  
Dividend per Share (in dollars per share)           $ 1.50  
Annual Dividend           $ 54  
Ownership interest in a share of preferred stock           0.10%  
Series FF Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           94,000  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 2,350  
Per Annum Dividend Rate     5.875%     5.875%  
Dividend per Share (in dollars per share)           $ 29.38  
Annual Dividend           $ 69  
Ownership interest in a share of preferred stock           4.00%  
Series GG Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           54,000  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 1,350  
Per Annum Dividend Rate   6.00%       6.00%  
Dividend per Share (in dollars per share)           $ 0.75  
Annual Dividend           $ 41  
Ownership interest in a share of preferred stock           0.10%  
Series HH Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           34,160  
Liquidation Preference per Share (in dollars per share)           $ 25,000  
Carrying Value           $ 854  
Per Annum Dividend Rate 5.875%         5.875%  
Dividend per Share (in dollars per share)           $ 0.73  
Annual Dividend           $ 25  
Ownership interest in a share of preferred stock           0.10%  
Series 1 Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           3,275  
Liquidation Preference per Share (in dollars per share)           $ 30,000  
Carrying Value           $ 98  
Dividend per Share (in dollars per share)           $ 0.76  
Annual Dividend           $ 3  
Minimum interest rate per annum           3.00%  
Ownership interest in a share of preferred stock           0.08333%  
Series 2 Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           9,967  
Liquidation Preference per Share (in dollars per share)           $ 30,000  
Carrying Value           $ 299  
Dividend per Share (in dollars per share)           $ 0.76  
Annual Dividend           $ 9  
Minimum interest rate per annum           3.00%  
Ownership interest in a share of preferred stock           0.08333%  
Series 4 Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           7,010  
Liquidation Preference per Share (in dollars per share)           $ 30,000  
Carrying Value           $ 210  
Dividend per Share (in dollars per share)           $ 1.01  
Annual Dividend           $ 9  
Minimum interest rate per annum           4.00%  
Ownership interest in a share of preferred stock           0.08333%  
Series 5 Preferred Stock              
Class of Stock [Line Items]              
Total Shares Outstanding (in shares)           14,056  
Liquidation Preference per Share (in dollars per share)           $ 30,000  
Carrying Value           $ 422  
Dividend per Share (in dollars per share)           $ 1.01  
Annual Dividend           $ 17  
Minimum interest rate per annum           4.00%  
Ownership interest in a share of preferred stock           0.08333%  
3-Month London Interbank Offered Rate (LIBOR) | Series E Preferred Stock              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.0035  
3-Month London Interbank Offered Rate (LIBOR) | Series F Preferred Stock              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.0040  
3-Month London Interbank Offered Rate (LIBOR) | Series G Preferred Stock              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.0040  
3-Month London Interbank Offered Rate (LIBOR) | Series U Preferred Stock | June 1, 2023              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.03135  
3-Month London Interbank Offered Rate (LIBOR) | Series V Preferred Stock | June 17, 2019              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.03387  
3-Month London Interbank Offered Rate (LIBOR) | Series X Preferred Stock | September 5, 2024              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.03705  
3-Month London Interbank Offered Rate (LIBOR) | Series Z Preferred Stock | October 23, 2024              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.04174  
3-Month London Interbank Offered Rate (LIBOR) | Series AA Preferred Stock | March 17, 2025              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.03898  
3-Month London Interbank Offered Rate (LIBOR) | Series DD Preferred Stock | March 10, 2026              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.04553  
3-Month London Interbank Offered Rate (LIBOR) | Series FF Preferred Stock | March 25, 2028              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.02931  
3-Month London Interbank Offered Rate (LIBOR) | Series 1 Preferred Stock              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.0075  
3-Month London Interbank Offered Rate (LIBOR) | Series 2 Preferred Stock              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.0065  
3-Month London Interbank Offered Rate (LIBOR) | Series 4 Preferred Stock              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.0075  
3-Month London Interbank Offered Rate (LIBOR) | Series 5 Preferred Stock              
Class of Stock [Line Items]              
Basis spread on variable rate for dividend rate           0.0050