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Debt - Receivables Securitization Agreement (Details) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jul. 21, 2021 | Mar. 31, 2021 USD ($)
Debt Instrument [Line Items] |  |  |  |
Repayment of long-term debt | $ 775 | $ 4 |  |
Receivables securitization agreement |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Amount borrowed | 100 |  |  | $ 275
Repayment of long-term debt | 200 |  |  |
Assets available to be pledged | 382 |  |  |
Maximum borrowing capacity | 450 |  |  |
Amount available for use | $ 350 |  |  |
Receivables securitization agreement | Subsequent event |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Consolidated leverage ratio |  |  | 3.75 |

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