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Subsequent Events - Additional Information (Detail) - USD ($) |  |  |  | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 29, 2020 | Jul. 14, 2020 | Jul. 10, 2020 | Jun. 30, 2020 | Aug. 05, 2020 | Dec. 31, 2019 | May 27, 2016
Subsequent Event [Line Items] |  |  |  |  |  |  |
Carrying amount of debt component |  |  |  | $ 1,294,625,000 |  | $ 1,147,649,000 |
4.375% Senior Notes [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Debt instrument, periodic interest payment description |  |  |  | The notes will pay interest semi-annually at a rate of 4.375% per annum, on each June 15 and December 15, beginning on December 15, 2020 |  |  |
5.125% Senior Notes [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Principal amount of notes |  |  |  | $ 300,000,000.0 |  |  | $ 300,000,000.0
Stated interest rate |  |  |  | 5.125% |  | 5.125% |
Debt instrument, periodic interest payment description |  |  |  | payable in cash on May 27 and November 27 of each year, commencing November 27, 2016 |  |  |
Senior Notes maturity date |  |  |  | May 27, 2021 |  |  |
Carrying amount of debt component |  |  |  | $ 299,100,000 |  |  | 295,800,000
Debt issuance costs |  |  |  |  |  |  | 4,200,000
Principal amount of debt component |  |  |  | $ 300,000,000.0 |  |  | $ 300,000,000.0
Subsequent Event [Member] | Senior Revolving Credit Agreement [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Repayment of borrowings outstanding |  | $ 225,000,000.0 |  |  |  |  |
Subsequent Event [Member] | 4.375% Senior Notes [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Principal amount of notes |  |  | $ 300,000,000.0 |  |  |  |
Stated interest rate |  |  | 4.375% |  |  |  |
Senior Notes maturity date |  |  | Dec. 15, 2025 |  |  |  |
Carrying amount of debt component |  |  | $ 296,800,000 |  |  |  |
Debt issuance costs |  |  | 3,200,000 |  |  |  |
Principal amount of debt component |  |  | $ 300,000,000.0 |  |  |  |
Subsequent Event [Member] | 5.125% Senior Notes [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Stated interest rate |  |  |  |  | 5.125% |  |
Cash tender offer amount |  |  |  |  | $ 300,000,000 |  |
Class A Common Stock [Member] | Subsequent Event [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Dividend declared per share | $ 0.01 |  |  |  |  |  |
Dividend payable declared date | Jul. 29, 2020 |  |  |  |  |  |
Dividend payable, date to be paid | Sep. 02, 2020 |  |  |  |  |  |
Dividend payable record date | Aug. 19, 2020 |  |  |  |  |  |
Class B Common Stock [Member] | Subsequent Event [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Dividend declared per share | $ 0.01 |  |  |  |  |  |
Dividend payable declared date | Jul. 29, 2020 |  |  |  |  |  |
Dividend payable, date to be paid | Sep. 02, 2020 |  |  |  |  |  |
Dividend payable record date | Aug. 19, 2020 |  |  |  |  |  |

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