Supplemental Financial Statement Information - Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Components of AOCI, net of tax
Beginning balance	$ 345,267	$ 292,844	$ 325,084	$ 283,379
Other comprehensive income (loss) before reclassifications			3,045	(1,036)
Amounts excluded from the assessment of hedge effectiveness recorded in AOCI			(169)	51
Amounts reclassified from AOCI			(203)	375
Other comprehensive income (loss)	1,959	(173)	2,673	(610)
Ending balance	362,916	300,753	362,916	300,753
Total
Components of AOCI, net of tax
Beginning balance	(4,086)	(4,839)	(4,800)	(4,402)
Other comprehensive income (loss)	1,959	(173)	2,673	(610)
Ending balance	(2,127)	(5,012)	(2,127)	(5,012)
Foreign Currency Translation Adjustments
Components of AOCI, net of tax
Beginning balance			(5,080)	(3,407)
Other comprehensive income (loss) before reclassifications			3,273	(950)
Amounts excluded from the assessment of hedge effectiveness recorded in AOCI			0	0
Amounts reclassified from AOCI			0	0
Other comprehensive income (loss)			3,273	(950)
Ending balance	(1,807)	(4,357)	(1,807)	(4,357)
Unrealized Gains (Losses) on Available-for-Sale Investments
Components of AOCI, net of tax
Beginning balance			(299)	(965)
Other comprehensive income (loss) before reclassifications			836	(453)
Amounts excluded from the assessment of hedge effectiveness recorded in AOCI			0	0
Amounts reclassified from AOCI			(113)	541
Other comprehensive income (loss)			723	88
Ending balance	424	(877)	424	(877)
Unrealized Gains (Losses) on Cash Flow Hedges
Components of AOCI, net of tax
Beginning balance			579	(30)
Other comprehensive income (loss) before reclassifications			(1,064)	367
Amounts excluded from the assessment of hedge effectiveness recorded in AOCI			(169)	51
Amounts reclassified from AOCI			(90)	(166)
Other comprehensive income (loss)			(1,323)	252
Ending balance	$ (744)	$ 222	$ (744)	$ 222