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Debt (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Short-term Debt [Line Items] |  |
Outstanding Balance | $ 2,243 | $ 1,878
Average commercial paper outstanding | $ 0 | $ 628
Short-term Debt |  |
Short-term Debt [Line Items] |  |
Year-End Stated Rate on Debt (as a percent) | 0.58% | 0.61%
Commercial Paper |  |
Short-term Debt [Line Items] |  |
Outstanding Balance | $ 0 | $ 0
Commercial Paper | Short-term Debt |  |
Short-term Debt [Line Items] |  |
Year-End Stated Rate on Debt (as a percent) | 0.00% | 0.00%
Other Short Term Borrowings |  |
Short-term Debt [Line Items] |  |
Outstanding Balance | $ 2,243 | $ 1,878
Other Short Term Borrowings | Short-term Debt |  |
Short-term Debt [Line Items] |  |
Year-End Stated Rate on Debt (as a percent) | 0.58% | 0.61%

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