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Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Income Taxes (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Contingency [Line Items]
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 101
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	210	$ 177	$ 64
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	637	$ 430
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 2,000
Federal [Member]
Income Tax Contingency [Line Items]
Tax Credit Carryforward, Description	indefinite
Earliest Tax Year [Member] \| State [Member]
Income Tax Contingency [Line Items]
Tax Credit Carryforward, Expiration Date	Jan. 01, 2025
Latest Tax Year [Member] \| State [Member]
Income Tax Contingency [Line Items]
Tax Credit Carryforward, Expiration Date	Jan. 01, 2044