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Debt and Credit Facilities - Senior Notes (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 26, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Debt Instrument [Line Items] |  |  |  |
Loss on debt redemption and refinancing activities |  | $ 16,100,000 | $ 1,900,000 | $ 0
Gain on settlement of interest rate swaps |  | $ (600,000) |  |
4.00% Senior Notes due December 2027 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument face amount | $ 425,000,000 |  |  |
Debt interest rate | 4.00% | 4.00% |  |
Extinguishment of debt, amount | $ 425,000,000 |  |  |
Aggregate value of debt redeemed | 452,000,000.0 |  |  |
Premium paid on redemption of debt | 15,500,000 |  |  |
Redemption accrued interest recognized | 11,500,000 |  |  |
Loss on debt redemption and refinancing activities | 16,100,000 |  |  |
Accelerated amortization non-lender fees | 1,200,000 |  |  |
Debt issuance costs | $ 3,500,000 |  |  |
6.50% Senior Notes due December 2020 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt interest rate | 6.50% | 6.50% | 6.50% |
Extinguishment of debt, amount | $ 425,000,000 |  |  |

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