Stockholders' Equity Other Comprehensive Income (Loss) (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
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance				$ (2,898)				$ (2,898)
Beginning Balance		$ 25,936		25,623	$ 24,778		$ 25,063	25,623	$ 25,063
Amounts Reclassified from Accumulated Other Comprehensive Loss		(64)			(157)			(76)	(303)
Other comprehensive (loss) income		(402)		77	122		(477)	(325)	(355)
Ending Balance		26,071		25,936	25,625		24,778	26,071	25,625
Ending Balance		(3,223)			(3,245)			(3,223)	(3,245)
Pension Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance				(396)			(1,433)	(396)	(1,433)
Other Comprehensive (Loss) Income, before Reclassifications, Net of Tax								13	(5)
Amounts Reclassified from Accumulated Other Comprehensive Loss								2	21
Other comprehensive (loss) income								15	16
Ending Balance		(381)			(1,417)			(381)	(1,417)
Other Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance				(31)			590	(31)	590
Other Comprehensive (Loss) Income, before Reclassifications, Net of Tax								3	1
Amounts Reclassified from Accumulated Other Comprehensive Loss								0	(318)
Other comprehensive (loss) income								3	(317)
Ending Balance		(28)			273			(28)	273
Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance				(2,543)			(1,970)	(2,543)	(1,970)
Other Comprehensive (Loss) Income, before Reclassifications, Net of Tax	[1]							(335)	(160)
Amounts Reclassified from Accumulated Other Comprehensive Loss								0	0
Other comprehensive (loss) income								(335)	(160)
Ending Balance		(2,878)			(2,130)			(2,878)	(2,130)
Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance				72			(67)	72	(67)
Other Comprehensive (Loss) Income, before Reclassifications, Net of Tax								70	109
Amounts Reclassified from Accumulated Other Comprehensive Loss		(66)			(7)			(78)	(13)
Other comprehensive (loss) income								(8)	96
Ending Balance		64			29			64	29
Unrealized Gain (loss) on Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance				0			(10)	0	(10)
Other Comprehensive (Loss) Income, before Reclassifications, Net of Tax								0	3
Amounts Reclassified from Accumulated Other Comprehensive Loss		0	[2]		1	[2]		0	7
Other comprehensive (loss) income								0	10
Ending Balance		0			0			0	0
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance				(2,898)			(2,890)	(2,898)	(2,890)
Beginning Balance		(2,821)		(2,898)	(3,367)		(2,890)	(2,898)	(2,890)
Other Comprehensive (Loss) Income, before Reclassifications, Net of Tax								(249)	(52)
Amounts Reclassified from Accumulated Other Comprehensive Loss								(76)	(303)
Other comprehensive (loss) income		(402)		77	122		(477)	(325)	(355)
Ending Balance		(3,223)		$ (2,821)	(3,245)		$ (3,367)	(3,223)	(3,245)
Ending Balance		$ (3,223)			$ (3,245)			$ (3,223)	$ (3,245)

[1] The cumulative translation adjustment gain for the six months ended June 30, 2022 was primarily driven by the strengthening of the USD against the European Euro ("EUR"), Swiss Franc ("CHF") and Indian Rupee ("INR"), partially offset by the weakening of the USD against the Brazilian Real ("BRL"). The cumulative translation adjustment loss for the six months ended June 30, 2021 was primarily driven by the weakening of the Swiss Franc ("CHF") and European Euro ("EUR") against the USD.

[2] Reflected in other income - net in the interim Consolidated Statements of Operations.