Earnings per Share - Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Numerator
Distributed earnings	$ 1,327	$ 1,266	$ 2,656	$ 2,539
Undistributed earnings	17,010	12,199	32,325	23,295
Net income	$ 18,337	$ 13,465	$ 34,981	$ 25,834
Denominator
Shares used in computation of basic EPS (in shares)	2,518	2,534	2,522	2,540
Basic EPS (in dollars per share)	$ 7.28	$ 5.31	$ 13.87	$ 10.17
Numerator
Net income for diluted EPS	$ 18,337	$ 13,465	$ 34,981	$ 25,834
Denominator
Shares used in computation of basic EPS (in shares)	2,518	2,534	2,522	2,540
Effect of dilutive RSUs (in shares)	52	76	58	79
Shares used in computation of diluted EPS (in shares)	2,570	2,610	2,580	2,619
Diluted EPS (in dollars per share)	$ 7.14	$ 5.16	$ 13.56	$ 9.86
Class A
Denominator
Shares used in computation of basic EPS (in shares)	2,175	2,189	2,179	2,193
Denominator
Shares used in computation of basic EPS (in shares)	2,175	2,189	2,179	2,193
Class B
Denominator
Shares used in computation of basic EPS (in shares)	343	345	343	347
Denominator
Shares used in computation of basic EPS (in shares)	343	345	343	347