Interim Condensed Consolidated Statements Of Equity - USD ($) shares in Millions, $ in Millions	Common Stock [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Common Stock [Member]	Additional Paid-in Capital [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Additional Paid-in Capital [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Treasury Stock [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Accumulated Other Comprehensive Loss [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Total
Beginning Balance at Dec. 31, 2020					$ 1,861		$ (55)			$ 314		$ (468)			$ 1,652
Beginning Balance (in shares) at Dec. 31, 2020		50
Capped Call					(101)										(101)
Repurchase of 2028 Notes Conversion Option					(1,484)										(1,484)
Common Stock repurchased							(25)								(25)
Net income										(34)					(34)
Other comprehensive income (loss)												(38)			(38)
Ending Balance at Mar. 31, 2021					276		(80)			280		(506)			(30)
Ending Balance (in shares) at Mar. 31, 2021		50
Beginning Balance at Dec. 31, 2020					1,861		(55)			314		(468)			1,652
Beginning Balance (in shares) at Dec. 31, 2020		50
Net income															34
Ending Balance at Jun. 30, 2021					455		(276)			348		(446)			81
Ending Balance (in shares) at Jun. 30, 2021		50
Beginning Balance at Mar. 31, 2021					276		(80)			280		(506)			(30)
Beginning Balance (in shares) at Mar. 31, 2021		50
Exercise of Convertible Notes					(2)										(2)
Unwind Capped Call					181		(79)								102
Common Stock repurchased							(117)								(117)
Net income										68					68
Other comprehensive income (loss)												60			60
Ending Balance at Jun. 30, 2021					455		(276)			348		(446)			81
Ending Balance (in shares) at Jun. 30, 2021		50
Beginning Balance at Dec. 31, 2021			$ (131)	$ 2,308	2,439	$ (790)	(790)	$ 34	$ 431	397	$ (515)	(515)	$ (97)	$ 1,434	1,531
Beginning Balance (in shares) at Dec. 31, 2021	50	50
Common Stock repurchased							(39)								(39)
Net income										65					65
Other comprehensive income (loss)												129			129
Ending Balance at Mar. 31, 2022					2,308		(829)			496		(386)			1,589
Ending Balance (in shares) at Mar. 31, 2022		50
Beginning Balance at Dec. 31, 2021			$ (131)	$ 2,308	2,439	$ (790)	(790)	$ 34	$ 431	397	$ (515)	(515)	$ (97)	$ 1,434	1,531
Beginning Balance (in shares) at Dec. 31, 2021	50	50
Net income															188
Ending Balance at Jun. 30, 2022					2,308		(858)			619		(489)			1,580
Ending Balance (in shares) at Jun. 30, 2022		50
Beginning Balance at Mar. 31, 2022					2,308		(829)			496		(386)			1,589
Beginning Balance (in shares) at Mar. 31, 2022		50
Shares granted (Note 17)							6								6
Common Stock repurchased							(35)								(35)
Net income										123					123
Other comprehensive income (loss)												(103)			(103)
Ending Balance at Jun. 30, 2022					$ 2,308		$ (858)			$ 619		$ (489)			$ 1,580
Ending Balance (in shares) at Jun. 30, 2022		50