Accumulated Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, Tax	$ 2	$ 2	$ 1
Accumulated comprehensive loss, net of tax, beginning of period	(174)	(151)	(153)	$ (146)
Amortization of amounts included in net periodic benefit cost	5	2	3
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss)	(1)	(1)
Other comprehensive income before reclassifications, net of taxes	(28)	1	(10)
Accumulated comprehensive loss, net of tax, end of period	(174)	(151)	(153)	(146)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated comprehensive loss, net of tax, beginning of period	(76)	(81)	(89)	(93)
Amortization of amounts included in net periodic benefit cost	5	5	4
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss)		0
Other comprehensive income before reclassifications, net of taxes	0	3	0
Accumulated comprehensive loss, net of tax, end of period	(76)	(81)	(89)	(93)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated comprehensive loss, net of tax, beginning of period	(96)	(68)	(67)	(57)
Amortization of amounts included in net periodic benefit cost	0	0	0
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss)		1
Other comprehensive income before reclassifications, net of taxes	(28)	0	(10)
Accumulated comprehensive loss, net of tax, end of period	(96)	(68)	(67)	(57)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated comprehensive loss, net of tax, beginning of period	(1)	(2)	3	4
Amortization of amounts included in net periodic benefit cost	0	(3)	(1)
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss)		0
Other comprehensive income before reclassifications, net of taxes	0	(2)	0
Accumulated comprehensive loss, net of tax, end of period	$ (1)	$ (2)	$ 3	$ 4