v3.21.1
Equity - Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance $ 13,097 $ (8,172)
Other comprehensive loss (178) (101)
Ending balance 13,733 (7,415)
Foreign currency translation adjustments    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance 583 (928)
Other comprehensive income (loss) before reclassifications (677) (227)
Net losses (gains) reclassified from accumulated other comprehensive loss 0 0
Other comprehensive loss (677) (227)
Ending balance (94) (1,155)
Net investment hedging activities    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (790) 9
Other comprehensive income (loss) before reclassifications 377 78
Net losses (gains) reclassified from accumulated other comprehensive loss (3) (6)
Other comprehensive loss 374 72
Ending balance (416) 81
Pension and post-employment benefits    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (3,067) (2,965)
Other comprehensive income (loss) before reclassifications 24 8
Net losses (gains) reclassified from accumulated other comprehensive loss 55 48
Other comprehensive loss 79 56
Ending balance (2,988) (2,909)
Cash flow hedging activities    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance 157 288
Other comprehensive income (loss) before reclassifications 35 4
Net losses (gains) reclassified from accumulated other comprehensive loss 11 (6)
Other comprehensive loss 46 (2)
Ending balance 203 286
Accumulated other comprehensive income (loss)    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (3,117) (3,596)
Other comprehensive income (loss) before reclassifications (241) (137)
Net losses (gains) reclassified from accumulated other comprehensive loss 63 36
Other comprehensive loss (178) (101)
Ending balance $ (3,295) $ (3,697)