Consolidated Statement of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 714	$ 555	$ 1,996	$ 1,883
Other comprehensive income (loss), net of related taxes:
Foreign currency translation, net of related taxes of $18 and ($14), respectively	(156)	283	(307)	135
Net unrealized gains (losses) on available-for-sale securities, net of reclassification adjustment and net of related taxes of ($39) and $4, respectively	(107)	2	(567)	463
Net unrealized gains (losses) on available-for-sale securities designated in fair value hedges, net of related taxes of $4 and $2, respectively	13	4	9	0
Net unrealized gains (losses) on cash flow hedges, net of related taxes of ($4) and $8, respectively	(12)	29	(16)	152
Net unrealized gains (losses) on retirement plans, net of related taxes of $1 and zero, respectively	2	1	12	15
Other comprehensive income (loss)	(260)	319	(869)	765
Total comprehensive income	$ 454	$ 874	$ 1,127	$ 2,648