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Commitments Contingencies and Guarantees (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract] |  |
Maximum Capital Lease Obligations As Offset Against Industrial Bonds | $ 150 |
Liability For Expected Credit Losses Included in Other Liabilities | 1 | $ 2
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances | 1,400 | $ 1,900
Other Notes Payable | 500 |
Other Notes Payable Funding Agreement Backed Notes | $ 400 |

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