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Fair Value Measurements (Assets And Liabilities Recorded At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | $ 15,045 | $ 16,869
Derivative assets | 666 | 1,019
Derivative liabilities | 794 | 1,206
U.S. Treasury securities |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 1,277 | 1,605
Residential mortgage-backed securities |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 9,076 | 10,519
Commercial Mortgage Backed Securities |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 4,692 | 4,745
Recurring |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 15,045 | 16,869
Derivative assets | 666 | 1,019
Total assets at fair value | 15,846 | 18,031
Derivative liabilities | 800 | 1,218
Deferred compensation plan liabilities | 91 | 104
Total liabilities at fair value | 891 | 1,322
Recurring | Level 1 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 1,277 | 1,605
Derivative assets | 0 | 0
Total assets at fair value | 1,412 | 1,748
Derivative liabilities | 0 | 0
Deferred compensation plan liabilities | 91 | 104
Total liabilities at fair value | 91 | 104
Recurring | Level 2 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 13,768 | 15,264
Derivative assets | 666 | 1,019
Total assets at fair value | 14,434 | 16,283
Derivative liabilities | 794 | 1,206
Deferred compensation plan liabilities | 0 | 0
Total liabilities at fair value | 794 | 1,206
Recurring | Level 3 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 0 | 0
Derivative assets | 0 | 0
Total assets at fair value | 0 | 0
Derivative liabilities | 6 | 12
Deferred compensation plan liabilities | 0 | 0
Total liabilities at fair value | 6 | 12
Recurring | Interest rate contracts |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative assets | 177 | 225
Derivative liabilities | 335 | 435
Recurring | Interest rate contracts | Level 1 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Recurring | Interest rate contracts | Level 2 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative assets | 177 | 225
Derivative liabilities | 335 | 435
Recurring | Interest rate contracts | Level 3 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Recurring | Energy derivative contracts |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative assets | 416 | 758
Derivative liabilities | 400 | 736
Recurring | Energy derivative contracts | Level 1 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Recurring | Energy derivative contracts | Level 2 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative assets | 416 | 758
Derivative liabilities | 400 | 736
Recurring | Energy derivative contracts | Level 3 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Recurring | Foreign exchange contracts |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative assets | 73 | 36
Derivative liabilities | 59 | 35
Recurring | Foreign exchange contracts | Level 1 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Recurring | Foreign exchange contracts | Level 2 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative assets | 73 | 36
Derivative liabilities | 59 | 35
Recurring | Foreign exchange contracts | Level 3 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Recurring | Derivative Financial Instruments, Liabilities |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative liabilities | 6 | 12
Recurring | Derivative Financial Instruments, Liabilities | Level 1 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative liabilities | 0 | 0
Recurring | Derivative Financial Instruments, Liabilities | Level 2 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative liabilities | 0 | 0
Recurring | Derivative Financial Instruments, Liabilities | Level 3 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Derivative liabilities | 6 | 12
Total liabilities at fair value | (6) | (12)
Recurring | Deferred compensation plan assets |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Deferred compensation plan assets | 89 | 104
Recurring | Deferred compensation plan assets | Level 1 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Deferred compensation plan assets | 89 | 104
Recurring | Deferred compensation plan assets | Level 2 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Deferred compensation plan assets | 0 | 0
Recurring | Deferred compensation plan assets | Level 3 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Deferred compensation plan assets | 0 | 0
Recurring | Equity and other non-debt securities |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Equity Securities, FV-NI | 46 | 39
Recurring | Equity and other non-debt securities | Level 1 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Equity Securities, FV-NI | 46 | 39
Recurring | Equity and other non-debt securities | Level 2 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Equity Securities, FV-NI | 0 | 0
Recurring | Equity and other non-debt securities | Level 3 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Equity Securities, FV-NI | 0 | 0
Recurring | U.S. Treasury securities |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 1,277 | 1,605
Recurring | U.S. Treasury securities | Level 1 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 1,277 | 1,605
Recurring | U.S. Treasury securities | Level 2 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 0 | 0
Recurring | U.S. Treasury securities | Level 3 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 0 | 0
Recurring | Residential mortgage-backed securities |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 9,076 | 10,519
Recurring | Residential mortgage-backed securities | Level 1 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 0 | 0
Recurring | Residential mortgage-backed securities | Level 2 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 9,076 | 10,519
Recurring | Residential mortgage-backed securities | Level 3 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 0 | 0
Recurring | Commercial Mortgage Backed Securities |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 4,692 | 4,745
Recurring | Commercial Mortgage Backed Securities | Level 1 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 0 | 0
Recurring | Commercial Mortgage Backed Securities | Level 2 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | 4,692 | 4,745
Recurring | Commercial Mortgage Backed Securities | Level 3 |  |
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Fair Value | $ 0 | $ 0

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