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v3.20.2

Debt - Narrative (Details) $ / shares in Units, shares in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Aug. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) $ / shares shares | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) $ / shares | Sep. 30, 2019 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Repurchases of senior notes |  |  |  | $ 179,735,000 | $ 0
Loss on extinguishment of debt |  | $ (26,736,000) | $ 0 | (26,736,000) | 0
Total interest payments |  |  |  | $ 44,200,000 | $ 38,500,000
9% Convertible Junior Subordinated Debentures |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Conversion rate (in shares per $1,000 note) |  |  |  | 0.0744718 |
Principal amount of notes used in determining conversion rate |  | $ 1,000 |  | $ 1,000 |
Convertible debt, conversion price (in dollars per share) | $ / shares |  | $ 13.43 |  | $ 13.43 |
Stated interest rate |  | 9.00% |  | 9.00% |
Extinguishment of debt, amount |  | $ 48,100,000 |  |  |
Repurchases of convertible junior subordinated debentures |  | 61,600,000 |  |  |
Loss on extinguishment of debt |  | 10,200,000 |  |  |
Reacquisition of convertible junior subordinated debentures-equity component |  | $ 2,700,000 |  |  |
Reduction in potentially dilutive shares due to debt extinguishment (in shares) | shares |  | 3.6 |  |  |
Senior Notes | 5.75% Senior Notes Due 2023 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate | 5.75% | 5.75% |  | 5.75% |
Debt instrument, face amount |  | $ 242,300,000 |  | $ 242,300,000 |
Extinguishment of debt, amount | $ 182,700,000 |  |  |  |
Repurchases of senior notes | 197,800,000 |  |  |  |
Loss on extinguishment of debt | $ 16,500,000 |  |  |  |
Senior Notes | 5.25% Senior Notes Due 2028 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate | 5.25% | 5.25% |  | 5.25% |
Debt instrument, face amount | $ 650,000,000 | $ 650,000,000 |  | $ 650,000,000 |
Proceeds from issuance of debt | $ 640,300,000 |  |  |  |
Other debt issuance costs, gross |  | $ 2,000,000.0 |  | $ 2,000,000.0 |
Ownership percentage threshold for declaration of due and payable |  |  |  | 25.00% |
Senior Notes | 5.25% Senior Notes Due 2028 | Debt Instrument, Redemption, Period One |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Redemption price, percentage | 102.625% |  |  |  |
Senior Notes | 5.25% Senior Notes Due 2028 | Debt Instrument, Redemption, Period Two |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Redemption price, percentage | 102.625% |  |  |  |
Senior Notes | 5.25% Senior Notes Due 2028 | Debt Instrument, Redemption, Period Two | Treasury rate |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 0.50% |  |  |  |
Senior Notes | 5.25% Senior Notes Due 2028 | Debt Instrument, Redemption, Period Three |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Redemption price, percentage | 102.625% |  |  |  |
Senior Notes | 5.25% Senior Notes Due 2028 | Debt Instrument, Redemption, Period Four |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Redemption price, percentage | 101.313% |  |  |  |
Senior Notes | 5.25% Senior Notes Due 2028 | Debt Instrument, Redemption, Period Five |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Redemption price, percentage | 100.00% |  |  |  |

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