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Long-Term Debt and Revolving Credit Agreements - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions | Mar. 31, 2021 | Feb. 28, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Line of Credit Facility [Line Items] |  |  |
Principal amount | $ 500 |  | $ 370
Deferred issuance costs | (6) |  | 0
Less: current portion | 0 |  | (22)
Long-term debt, noncurrent | $ 494 |  | $ 348
Annual contractual interest rate | 3.50% |  | 1.77%
Effective interest rate | 3.67% |  | 1.87%
2018 Term Loan A | Loans Payable |  |  |
Line of Credit Facility [Line Items] |  |  |
Principal amount | $ 0 |  | $ 370
2029 Notes Payable | Loans Payable |  |  |
Line of Credit Facility [Line Items] |  |  |
Principal amount |  | $ 500 | $ 0

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