Shareholders' Equity (Deficiency) (Shareholders' Equity Activity) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance	$ 426	$ 496	$ 821	$ 937	$ 496	$ 937
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	12	(74)	(73)	(110)	(62)	(183)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	5	4	2
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	11		4	2
Other Comprehensive Income (Loss), Net of Tax	59		15	(4)
Balance, ending balance	491	426	759	821	491	759
Noncontrolling Interest, Change in Redemption Value			(2)
Capital in Excess of Par Value
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance	2,908	2,904	2,897	2,897	2,904	2,897
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	5	4	2
Balance, ending balance	2,913	2,908	2,899	2,897	2,913	2,899
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance	(2,477)	(2,397)	(2,063)	(1,947)	(2,397)	(1,947)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	6	(80)	(78)	(116)
Balance, ending balance	(2,471)	(2,477)	(2,141)	(2,063)	(2,471)	(2,141)
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance	(35)	(35)	(47)	(43)	(35)	(43)
Other Comprehensive Income (Loss), Net of Tax	59		15	(4)
Balance, ending balance	24	(35)	(32)	(47)	24	(32)
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance	30	24	34	30	24	30
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		6	5	6
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	11		4	2
Balance, ending balance	$ 25	$ 30	33	$ 34	$ 25	$ 33
Noncontrolling Interest, Change in Redemption Value			$ (2)