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Fair Value Measurements - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Jun. 30, 2022 | Dec. 31, 2021 | Nov. 30, 2020 | Oct. 31, 2020 | Sep. 30, 2015
--- | --- | --- | --- | --- | --- | ---
Carrying Amount | Other notes payable |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | $ 53.1 |  | $ 47.7 |  |  |
Estimated Fair Value | Other notes payable |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | 53.1 |  | 47.7 |  |  |
Advances under revolving credit facility | Carrying Amount |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | 55.0 |  | 200.0 |  |  |
Advances under revolving credit facility | Estimated Fair Value |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | 55.0 |  | 200.0 |  |  |
Letter of Credit | Carrying Amount |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | 0.0 |  | 0.0 |  |  |
Letter of Credit | Estimated Fair Value |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | 32.7 |  | 38.2 |  |  |
Term loan facilities | Carrying Amount | Term loan facilities |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | 0.0 |  | 238.5 |  |  |
Term loan facilities | Estimated Fair Value | Term loan facilities |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | $ 0.0 |  | $ 239.6 |  |  |
5.125% Senior Notes due 2023 | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Debt instrument interest rate (percent) | 5.125% |  | 5.125% |  |  |
5.125% Senior Notes due 2023 | Carrying Amount | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | $ 0.0 |  | $ 99.6 |  |  |
5.125% Senior Notes due 2023 | Estimated Fair Value | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | $ 0.0 |  | $ 100.2 |  |  |
5.75% Senior Notes due 2025 | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Debt instrument interest rate (percent) | 5.75% |  | 5.75% | 5.75% |  | 5.75%
5.75% Senior Notes due 2025 | Carrying Amount | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | $ 347.7 |  | $ 347.0 |  |  |
5.75% Senior Notes due 2025 | Estimated Fair Value | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | $ 347.7 |  | $ 357.9 |  |  |
4.50% Senior Notes due 2028 | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Debt instrument interest rate (percent) | 4.50% |  | 4.50% |  |  |
4.50% Senior Notes due 2028 | Carrying Amount | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | $ 781.8 |  | $ 786.8 |  |  |
4.50% Senior Notes due 2028 | Estimated Fair Value | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | $ 726.7 |  | $ 823.0 |  |  |
4.75% Senior Notes due 2030 | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Debt instrument interest rate (percent) | 4.75% |  | 4.75% |  |  |
4.75% Senior Notes due 2030 | Carrying Amount | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | $ 779.0 |  | $ 784.7 |  |  |
4.75% Senior Notes due 2030 | Estimated Fair Value | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | $ 703.7 |  | $ 824.0 |  |  |
4.625% Senior Notes due 2031 | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Debt instrument interest rate (percent) | 4.625% | 4.625% | 4.625% |  | 4.625% |
4.625% Senior Notes due 2031 | Carrying Amount | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | $ 390.6 |  | $ 393.7 |  |  |
4.625% Senior Notes due 2031 | Estimated Fair Value | Senior Notes |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Carrying amounts and estimated fair values of financial instruments | $ 342.2 |  | $ 407.0 |  |  |

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