Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Preferred Stock Summary (Details)

v3.20.4
Shareholders' Equity - Preferred Stock Summary (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Oct. 29, 2020
Dec. 31, 2020
Dec. 31, 2019
Class of Stock [Line Items]      
Total Shares Outstanding (in shares)   3,931,440 3,887,440
Issuance costs and certain adjustments   $ (348)  
Total   $ 24,510  
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  
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)   $ 1.02  
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)   $ 4,066.67  
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)   $ 4,066.67  
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%  
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 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 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%  
Dividend per Share (in dollars per share)   $ 58.75  
Annual Dividend   $ 138  
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%  
Dividend per Share (in dollars per share)   $ 1.50  
Annual Dividend   $ 81  
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%  
Dividend per Share (in dollars per share)   $ 1.47  
Annual Dividend   $ 50  
Ownership interest in a share of preferred stock   0.10%  
Series JJ 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   5.125%  
Dividend per Share (in dollars per share)   $ 51.25  
Annual Dividend   $ 51  
Ownership interest in a share of preferred stock   4.00%  
Series KK Preferred Stock      
Class of Stock [Line Items]      
Total Shares Outstanding (in shares)   55,900  
Liquidation Preference per Share (in dollars per share)   $ 25,000  
Carrying Value   $ 1,398  
Per Annum Dividend Rate   5.375%  
Dividend per Share (in dollars per share)   $ 1.34  
Annual Dividend   $ 75  
Ownership interest in a share of preferred stock   0.10%  
Series LL Preferred Stock      
Class of Stock [Line Items]      
Total Shares Outstanding (in shares)   52,400  
Liquidation Preference per Share (in dollars per share)   $ 25,000  
Carrying Value   $ 1,310  
Per Annum Dividend Rate   5.00%  
Dividend per Share (in dollars per share)   $ 1.25  
Annual Dividend   $ 66  
Ownership interest in a share of preferred stock   0.10%  
Series MM 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   4.30%  
Dividend per Share (in dollars per share)   $ 43.48  
Annual Dividend   $ 48  
Ownership interest in a share of preferred stock   4.00%  
Series NN 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 4.375% 4.375%  
Dividend per Share (in dollars per share)   $ 0.29  
Annual Dividend   $ 13  
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)   $ 0.75  
Annual Dividend   $ 3  
Minimum interest rate per annum   3.00%  
Ownership interest in a share of preferred stock   0.08%  
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   $ 10  
Minimum interest rate per annum   3.00%  
Ownership interest in a share of preferred stock   0.08%  
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)   $ 1.02  
Annual Dividend   $ 9  
Minimum interest rate per annum   4.00%  
Ownership interest in a share of preferred stock   0.08%  
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)   $ 1.02  
Annual Dividend   $ 17  
Minimum interest rate per annum   4.00%  
Ownership interest in a share of preferred stock   0.08%  
3-Month London Interbank Offered Rate (LIBOR) | Series E Preferred Stock      
Class of Stock [Line Items]      
Minimum interest rate per annum   0.35%  
3-Month London Interbank Offered Rate (LIBOR) | Series F Preferred Stock      
Class of Stock [Line Items]      
Minimum interest rate per annum   0.40%  
3-Month London Interbank Offered Rate (LIBOR) | Series G Preferred Stock      
Class of Stock [Line Items]      
Minimum interest rate per annum   0.40%  
3-Month London Interbank Offered Rate (LIBOR) | Series U Preferred Stock | June 1, 2023      
Class of Stock [Line Items]      
Minimum interest rate per annum   3.135%  
3-Month London Interbank Offered Rate (LIBOR) | Series X Preferred Stock | September 5, 2024      
Class of Stock [Line Items]      
Minimum interest rate per annum   3.705%  
3-Month London Interbank Offered Rate (LIBOR) | Series Z Preferred Stock | October 23, 2024      
Class of Stock [Line Items]      
Minimum interest rate per annum   4.174%  
3-Month London Interbank Offered Rate (LIBOR) | Series AA Preferred Stock | March 17, 2025      
Class of Stock [Line Items]      
Minimum interest rate per annum   3.898%  
3-Month London Interbank Offered Rate (LIBOR) | Series DD Preferred Stock | March 10, 2026      
Class of Stock [Line Items]      
Minimum interest rate per annum   4.553%  
3-Month London Interbank Offered Rate (LIBOR) | Series FF Preferred Stock | March 25, 2028      
Class of Stock [Line Items]      
Minimum interest rate per annum   2.931%  
3-Month London Interbank Offered Rate (LIBOR) | Series JJ Preferred Stock | June 20, 2024      
Class of Stock [Line Items]      
Minimum interest rate per annum   3.292%  
3-Month London Interbank Offered Rate (LIBOR) | Series 1 Preferred Stock      
Class of Stock [Line Items]      
Minimum interest rate per annum   0.75%  
3-Month London Interbank Offered Rate (LIBOR) | Series 2 Preferred Stock      
Class of Stock [Line Items]      
Minimum interest rate per annum   0.65%  
3-Month London Interbank Offered Rate (LIBOR) | Series 4 Preferred Stock      
Class of Stock [Line Items]      
Minimum interest rate per annum   0.75%  
3-Month London Interbank Offered Rate (LIBOR) | Series 5 Preferred Stock      
Class of Stock [Line Items]      
Minimum interest rate per annum   0.50%