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Consolidated Statements Of Comprehensive Income - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Net income (loss) $ 3,641 $ (964)
Other comprehensive income (loss), net of tax:    
Change in value of available-for-sale securities 0 (9)
Actuarial gain related to pension and other postretirement benefit plans 5 3
Foreign currency translation adjustments 12 (64)
Change in other comprehensive loss from unconsolidated affiliates (9) (16)
Other comprehensive income (loss), net of tax 8 (86)
Comprehensive income (loss) 3,649 (1,050)
Less: Comprehensive income (loss) attributable to noncontrolling interests 347 (159)
Less: Net income attributable to redeemable noncontrolling interests 12 12
Comprehensive income (loss) attributable to partners $ 3,290 $ (903)