Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustments, attributable to noncontrolling interest, net of taxes	$ 0	$ (4)	$ 0	$ (2)
Foreign currency translation adjustments - tax effect	(38)	(17)	25	(13)
Distribution of WarnerMedia, net of taxes of $0, $0, $(38) and $0	0	0	(38)	0
Net unrealized gains (losses), net of taxes of $(15), $(1), $(52) and $(13)	(15)	(1)	(52)	(13)
Reclassification adjustment included in net income, net of taxes of $1, $0, $3 and $(1)	1	0	3	(1)
Net unrealized gains (losses), net of taxes of $(143), $(54) $(246) and $(160)	(143)	(54)	(246)	(160)
Reclassification adjustment included in net income, net of taxes of $3, $4, $22 and $16	3	4	22	16
Distribution of WarnerMedia, net of taxes of $0, $0, $(12) and $0	0	0	(12)	0
Net prior service credit arising during the period, net of taxes of $583, $0, $583 and $0	583	0	583	0
Amortization of net prior service credit included in net income, net of taxes of $(180), $(165), $(484) and $(495)	(180)	(165)	(484)	(495)
Distribution of WarnerMedia, net of taxes of $0, $0, $5 and $0	$ 0	$ 0	$ (5)	$ 0

Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to noncontrolling interests.

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Amount of tax expense (benefit), before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for translation gain (loss) realized upon the sale or liquidation of an investment in a foreign entity and foreign currency hedges that are designated and qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation.

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