Loss per Share - Reconciliation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Basic Loss per Share:
Net Income (Loss)	$ 1	$ (322)	$ (455)
Accrued dividends on preferred stock	(14)	(14)	(14)
Adjusted Net Loss attributable to common shareholders	$ (13)	$ (336)	$ (469)
Weighted average common shares outstanding (in shares)	149,116	156,006	183,168
Basic Loss per Share (in dollars per share)	$ (0.09)	$ (2.15)	$ (2.56)
Diluted Loss per Share:
Net Income (Loss)	$ 1	$ (322)	$ (455)
Accrued dividends on preferred stock	(14)	(14)	(14)
Adjusted Net Loss attributable to common shareholders	$ (13)	$ (336)	$ (469)
Weighted average common shares outstanding (in shares)	149,116	156,006	183,168
Common shares issuable with respect to:
Adjusted Weighted average common shares outstanding (in shares)	149,116	156,006	183,168
Diluted Loss per Share (in dollars per share)	$ (0.09)	$ (2.15)	$ (2.56)
Stock options
Common shares issuable with respect to:
Stock options, restricted stock and performance shares (in shares)	0	0	0
Restricted stock and performance shares
Common shares issuable with respect to:
Stock options, restricted stock and performance shares (in shares)	0	0	0
Convertible preferred stock
Common shares issuable with respect to:
Stock options, restricted stock and performance shares (in shares)	0	0	0