Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Total Stockholders Equity	Common Stock	Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Non-Redeemable Noncontrolling Interests in Subsidiaries
Balance at beginning of period (in shares) at Dec. 31, 2020			129.0
Balance at beginning of period at Dec. 31, 2020		$ 1,051	$ 1	$ 368	$ 950	$ (271)	$ 3
Comprehensive income:
Net income		31			30		1
Other comprehensive income (loss)	$ (8)	(8)				(8)	0
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Continuing Operations		23			30	(8)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Nonredeemable Noncontrolling Interest							1
Employee stock purchase and stock compensation plans (in shares)			2.0
Employee stock purchase and stock compensation plans		30		30
Series A convertible preferred stock dividends					(4)
Series A convertible preferred stock dividends		(4)
Repurchase of Company common stock (in shares)			0.0
Stock Repurchased During Period, Value		0		0
Balance at end of period (in shares) at Mar. 31, 2021			131.0
Balance at end of period at Mar. 31, 2021		1,100	$ 1	398	976	(279)	4
Balance at beginning of period (in shares) at Dec. 31, 2021			132.0
Balance at beginning of period at Dec. 31, 2021	1,259	1,259	$ 1	515	1,031	(291)	3
Comprehensive income:
Net income		(35)			(34)		(1)
Other comprehensive income (loss)	$ 18	18				18	0
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Continuing Operations		(17)			(34)	18
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Nonredeemable Noncontrolling Interest							(1)
Employee stock purchase and stock compensation plans (in shares)			3.0
Employee stock purchase and stock compensation plans		19		19
Series A convertible preferred stock dividends		(4)			(4)
Balance at end of period (in shares) at Mar. 31, 2022	136.3		136.0
Balance at end of period at Mar. 31, 2022	$ 1,325	1,325	$ 1	602	$ 993	$ (273)	$ 2
Comprehensive income:
Stock issued in acquisition of LibertyX		$ 68	$ 1	$ 68