Reclassifications from Accumulated Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning		$ 2,547	$ 497
Other comprehensive income	[1]	0	0
Balance ending		(119)	586
Accumulated other comprehensive income		(2,675)	80
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning		(25)	(38)
Other comprehensive income before reclassifications		0
Amounts reclassified from other comprehensive income		0
Other comprehensive income		0
Balance ending		(25)	$ (38)
Pension and Other Postretirement
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning		(11)
Other comprehensive income before reclassifications		0
Amounts reclassified from other comprehensive income		0
Other comprehensive income		0
Balance ending		(11)
Pension and Other Postretirement | Reclassification out of Accumulated Other Comprehensive Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income		1
Foreign Currency
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning		(14)
Other comprehensive income before reclassifications		0
Amounts reclassified from other comprehensive income		0
Other comprehensive income		0
Balance ending		$ (14)

[1] Settlement adjustment was less than $1 million for the three months ended March 31, 2022.