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Debt - Redemptions (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Sep. 02, 2020 | Apr. 02, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Debt Instrument, Redemption [Line Items] |  |  |  |  |
Redemption percentage |  | 102.625% |  |  |
(Gain) loss on extinguishment of debt | $ 3,300 | $ 10,400 | $ 13,700 | $ 0 | $ 0
Unamortized discount | 2,600 | 1,900 |  |  |
Unamortized premium | 700 | 600 |  |  |
Accrued interest paid | $ 6,900 | $ 4,600 |  |  |
4.00% Senior Notes |  |  |  |  |
Debt Instrument, Redemption [Line Items] |  |  |  |  |
Interest rate |  |  | 4.00% |  |
5.00% Senior Notes |  |  |  |  |
Debt Instrument, Redemption [Line Items] |  |  |  |  |
Interest rate | 5.00% |  | 5.00% |  |
Redeemed aggregate principal amount | $ 550,000 |  |  |  |
5.00% Senior Notes | August 15, 2023 |  |  |  |  |
Debt Instrument, Redemption [Line Items] |  |  |  |  |
Redemption percentage |  |  | 102.00% |  |
5.00% Senior Notes | August 15, 2024 |  |  |  |  |
Debt Instrument, Redemption [Line Items] |  |  |  |  |
Redemption percentage |  |  | 101.333% |  |
5.00% Senior Notes | August 15, 2025 |  |  |  |  |
Debt Instrument, Redemption [Line Items] |  |  |  |  |
Redemption percentage |  |  | 100.667% |  |
5.00% Senior Notes | August 15, 2026 and thereafter |  |  |  |  |
Debt Instrument, Redemption [Line Items] |  |  |  |  |
Redemption percentage |  |  | 100.00% |  |
5.25% Senior Notes |  |  |  |  |
Debt Instrument, Redemption [Line Items] |  |  |  |  |
Interest rate |  | 5.25% | 5.25% |  |
Redeemed aggregate principal amount |  | $ 300,000 |  |  |
Principal amount of notes redeemed plus associated premium |  | $ 307,900 |  |  |

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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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- Definition Amount, after accumulated amortization, of debt discount (premium). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28567-108399 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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