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Debt 2030 Notes and 2049 Notes Issued in 2020 (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 04, 2020 | Jun. 29, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, gross |  |  | $ 2,320,300,000 | $ 2,334,400,000 |
Loss on extinguishment of debt | $ 21,100,000 | $ 10,600,000 | 21,100,000 | 10,600,000 | $ 0
Payments of related issuance costs |  |  | 7,000,000.0 | 6,500,000 | $ 0
Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Proceeds from offering |  |  | 669,100,000 | 693,300,000 |
Loss on extinguishment of debt |  |  |  | 10,600,000 |
Payments of related issuance costs |  |  | 6,000,000.0 | 6,500,000 |
2030 Notes | Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Aggregate principal amount |  |  | $ 350,000,000.0 |  |
Stated interest rate |  |  | 3.50% |  |
Stated coupon rate |  |  | 99.774% |  |
Yield to maturity |  |  | 3.525% |  |
Long-term debt, gross |  |  | $ 350,000,000.0 |  |
2049 Notes | Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Aggregate principal amount |  |  | $ 300,000,000.0 | $ 325,000,000.0 |
Stated interest rate |  |  | 5.25% | 5.25% |
Stated coupon rate |  |  | 106.626% | 98.32% |
Yield to maturity |  |  | 4.821% | 5.363% |
Long-term debt, gross |  |  |  | $ 325,000,000.0 |
2025 Notes | Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate |  |  |  | 5.25% |
Stated coupon rate |  |  | 102.625% |  |
Yield to maturity |  |  |  | 5.25% |
Long-term debt, gross |  |  | $ 650,000,000.0 | $ 650,000,000.0 |

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