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Debt (Details) - USD ($) | Jun. 30, 2021 | May 31, 2021 | Dec. 31, 2020
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Senior Notes Due 2031 | Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes issued |  | $ 500,000,000 |
Stated rates |  | 2.30% |
Senior Notes Due in 2121 | Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes issued |  | $ 600,000,000 |
Stated rates |  | 4.10% |
Securitization Borrowings |  |  |
Debt Instrument [Line Items] |  |  |
Accounts receivable securitization program, maximum borrowing capacity |  | $ 400,000,000 |
Available borrowing capacity | $ 400,000,000 |  | $ 400,000,000

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