v3.22.4
Stockholders' Equity and Noncontrolling Interests - Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Balance at beginning of period $ 65,815 $ 49,677 $ 45,957
Other comprehensive income (loss), net of tax 1,337 4,206 (2,318)
Balance at end of period 71,927 65,815 49,677
Foreign Currency Translation Adjustments      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Balance at beginning of period (2,654) (2,735) (2,278)
Other comprehensive loss and noncontrolling interests before reclassification adjustment (123) 81 (457)
Balance at end of period (2,776) (2,654) (2,735)
Defined Benefit Plans      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Balance at beginning of period (6,528) (10,654) (8,859)
Other comprehensive loss and noncontrolling interests before reclassification adjustment 1,487 4,714 (2,661)
Tax benefit (expense) 2 (906) 444
Other comprehensive loss and noncontrolling interests before reclassification adjustment, net of tax 1,488 3,808 (2,217)
Reclassification adjustment, net of tax 188 318 422
Other comprehensive income (loss), net of tax 1,677 4,126 (1,795)
Balance at end of period $ (4,851) $ (6,528) $ (10,654)