Segment Information - Reportable Segments and Reconciliation to Consolidated Net Income (Details) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($) segment	Mar. 31, 2022 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)
Segment Reporting [Abstract]
Number of operating segments | segment	3
Segment Reporting Disclosure [Line Items]
Net sales	$ 127,358	$ 116,444
Operating expenses	122,584	112,775
Operating income	4,774	3,669
Total non-operating expense	(655)	(8,934)
Benefit (provision) for income taxes	(948)	1,422
Equity-method investment activity, net of tax	1	(1)
Net income (loss)	3,172	(3,844)	$ 4,294	$ 21,413
North America
Segment Reporting Disclosure [Line Items]
Net sales	76,881	69,244
Operating expenses	75,983	70,812
Operating income	898	(1,568)
International
Segment Reporting Disclosure [Line Items]
Net sales	29,123	28,759
Operating expenses	30,370	30,040
Operating income	(1,247)	(1,281)
AWS
Segment Reporting Disclosure [Line Items]
Net sales	21,354	18,441
Operating expenses	16,231	11,923
Operating income	$ 5,123	$ 6,518