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Income Taxes Reconciliation of the beginning and ending amount of unrecognized tax benefits (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Income Tax Contingency [Line Items]      
Gross unrecognized tax benefits, beginning of period $ 3,716 $ 3,081 $ 2,310
Current year tax positions 578 782 586
Prior year tax positions, gross increases 10 97 206
Prior year tax positions, gross decreases (121) (212) (21)
Statute of limitations lapses and settlements (60) (32) 0
Gross unrecognized tax benefits, end of period $ 4,123 $ 3,716 $ 3,081