Annual report pursuant to Section 13 and 15(d)

Earnings Per Common Share - Narrative (Details)

v3.10.0.1
Earnings Per Common Share - Narrative (Details) - $ / shares
1 Months Ended 12 Months Ended
Aug. 24, 2017
Sep. 30, 2011
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Stock Options          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Average options to purchase shares of common stock (in shares)     4,000,000 21,000,000 45,000,000
Series T Preferred Stock          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Per annum dividend rate 6.00% 6.00% 6.00%    
Dilutive Securities          
Incremental common shares attributable to dilutive effect of conversion of preferred stock (in shares)         700,000,000
Series L Preferred Stock          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Per annum dividend rate     7.25%    
Series L Preferred Stock | Convertible Preferred Stock Subject to Mandatory Redemption          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Average options to purchase shares of common stock (in shares)     62,000,000 62,000,000 62,000,000
Warrant          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Shares issued (in shares)   700,000,000      
Exercise price (in dollars per share)   $ 7.142857      
Common Stock          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Common stock issued in connection with exercise of warrants and exchange of preferred stock (in shares) 700,000,000        
Dilutive Securities          
Incremental common shares attributable to dilutive effect of call options and warrants (in shares)     136,000,000 143,000,000 150,000,000
Common Stock | Warrant          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Average options to purchase shares of common stock (in shares)       122,000,000 122,000,000