Earnings Per Share - Antidilutive Securities Excluded from Computation of EPS Table (Details) shares in Millions			3 Months Ended		9 Months Ended
	Apr. 14, 2020	Apr. 13, 2020	Sep. 30, 2020 shares	Sep. 30, 2019 shares	Sep. 30, 2020 shares	Sep. 30, 2019 shares
Common stock equivalent of our convertible senior notes outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares of common stock that were excluded from the calculation of diluted EPS (in shares)			0	621	621	621
Common stock equivalent of our preferred stock outstanding prior to exchange
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares of common stock that were excluded from the calculation of diluted EPS (in shares)			0	5	0	5
Participating securities
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares of common stock that were excluded from the calculation of diluted EPS (in shares)			0	1	0	2
PREFERRED STOCK
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares of common stock that were excluded from the calculation of diluted EPS (in shares)			290	290	290	290
COMMON STOCK
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock split, conversion ratio	0.005	0.005