Condensed Consolidated Statement of Stockholders' Equity - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Capital in excess of par value	Capital in excess of par value Cumulative Effect, Period of Adoption, Adjustment	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated other comprehensive income	Accumulated other comprehensive income Cumulative Effect, Period of Adoption, Adjustment	Treasury stock
Balance at beginning of period at Dec. 31, 2020	$ 8,876	$ 0	$ 888	$ 4,191		$ 14,777	$ 19	$ (105)	$ (19)	$ (10,875)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common and treasury stock pursuant to Employee stock plans	0			(8)						8
Share-based compensation	14			14
Stock warrants	23			23
Comprehensive income	180					116		64
Balance at end of period at Mar. 31, 2021	9,093		888	4,220		14,912		(60)		(10,867)
Balance at beginning of period at Dec. 31, 2020	8,876	0	888	4,191		14,777	19	(105)	(19)	(10,875)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	723
Balance at end of period at Jun. 30, 2021	9,688		888	4,269		15,260		136		(10,865)
Balance at beginning of period at Dec. 31, 2020	8,876	0	888	4,191		14,777	19	(105)	$ (19)	(10,875)
Balance at end of period at Dec. 31, 2021	$ 10,414	(245)	888	4,224	$ (300)	15,774	55	388		(10,860)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2020-06
Balance at beginning of period at Mar. 31, 2021	$ 9,093		888	4,220		14,912		(60)		(10,867)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common and treasury stock pursuant to Employee stock plans	13			11						2
Share-based compensation	16			16
Stock warrants	22			22
Comprehensive income	544					348		196
Balance at end of period at Jun. 30, 2021	9,688		888	4,269		15,260		136		(10,865)
Balance at beginning of period at Dec. 31, 2021	10,414	(245)	888	4,224	(300)	15,774	55	388		(10,860)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common and treasury stock pursuant to Employee stock plans	7			0						7
Share-based compensation	16			16
Comprehensive income	225					(278)		503
Balance at end of period at Mar. 31, 2022	10,417		888	3,940		15,551		891		(10,853)
Balance at beginning of period at Dec. 31, 2021	10,414	$ (245)	888	4,224	$ (300)	15,774	$ 55	388		(10,860)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	899
Balance at end of period at Jun. 30, 2022	11,120		888	3,966		16,311		805		(10,850)
Balance at beginning of period at Mar. 31, 2022	10,417		888	3,940		15,551		891		(10,853)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common and treasury stock pursuant to Employee stock plans	13			10						3
Share-based compensation	16			16
Comprehensive income	674					760		(86)
Balance at end of period at Jun. 30, 2022	$ 11,120		$ 888	$ 3,966		$ 16,311		$ 805		$ (10,850)