Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Derivatives - Cash Flow Hedges (Details) - USD ($)	12 Months Ended
Derivatives - Cash Flow Hedges (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021	Mar. 31, 2020	Dec. 31, 2019
Derivatives in Cash Flow Hedging Relationships
Accumulated other comprehensive income (loss)	$ (6,673,000,000)	$ (6,750,000,000)
Cash flow hedge
Derivatives in Cash Flow Hedging Relationships
Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges	(7,000,000)
After-tax net unrealized gain (loss) anticipated to be reclassified from AOCI to the income statement within next twelve months	$ 68,000,000
Cash flow hedge \| Foreign currency forward/option contracts
Derivatives in Cash Flow Hedging Relationships
Maximum length of time hedged in cash flow hedge (in months)	36 months
Cash flow hedge \| Treasury rate lock contracts
Derivatives in Cash Flow Hedging Relationships
Derivative, notional amount			$ 500,000,000
Cash flow hedge \| Interest rate swap and treasury lock in aggregate
Derivatives in Cash Flow Hedging Relationships
Accumulated other comprehensive income (loss)				$ 143,000,000
Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges	$ (94,000,000)