Reclassifications from Accumulated Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 2,547	$ 497	$ 3,246
Other comprehensive income before reclassifications	34
Amounts reclassified from other comprehensive income	(3)
Net current-period other comprehensive income	31	13	(5)
Ending balance	4,324	2,547	497
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(25)	(38)	(33)
Net current-period other comprehensive income	31	13	(5)
Ending balance	6	(25)	$ (38)
Pension and Other Postretirement
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(11)
Other comprehensive income before reclassifications	34
Amounts reclassified from other comprehensive income	(3)
Net current-period other comprehensive income	31
Ending balance	20	(11)
Foreign Currency
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(14)
Other comprehensive income before reclassifications	0
Amounts reclassified from other comprehensive income	0
Net current-period other comprehensive income	0
Ending balance	$ (14)	$ (14)