Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Common Share - Narrative (Details)

v3.19.1
Earnings Per Common Share - Narrative (Details) - shares
shares in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Stock Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Average options to purchase shares of common stock (in shares)   7
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 62
Common Stock    
Dilutive Securities    
Incremental common shares attributable to dilutive effect of call options and warrants (in shares) 14 142
Common Stock | Warrant    
Dilutive Securities    
Incremental common shares attributable to dilutive effect of call options and warrants (in shares)   122