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v3.21.2

Long-Term Debt and Short-Term Borrowings (Narrative) (Details) |  |  |  | 3 Months Ended |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 15, 2021 USD ($) | Jul. 26, 2018 USD ($) | Jan. 27, 2017 USD ($) | Jun. 30, 2021 USD ($) | Sep. 30, 2021 | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Nov. 10, 2020 USD ($) | May 01, 2020 USD ($) | Apr. 30, 2020 | May 23, 2019 USD ($) | May 22, 2019 USD ($) | Jan. 27, 2017 EUR (€) | Jan. 27, 2017 AUD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt |  |  |  | $ 1,247,300,000 |  |  | $ 1,136,600,000 |  |  |  |  |  |  |
Write-off of debt issuance costs |  |  |  | $ 3,700,000 |  |  |  |  |  |  |  |  |  |
Secured Debt | Senior Secured Credit Facility Due January 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated leverage ratio (including share repurchases and dividends) |  |  |  |  |  |  |  |  |  |  |  | 2.50 |  |
Secured Debt | Senior Secured Credit Facility Due January 2022 | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed coverage ratio |  |  |  |  |  |  |  |  |  |  |  | 1.25 |  |
Secured Debt | Revolving Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 400,000,000.0 |  |  |  |  |  |  |  |  |  |  |
Secured Debt | Senior Secured Credit Facility Due May 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum consolidated leverage ratio |  |  |  |  |  |  |  |  | 4.75 | 3.75 |  |  |  |
Cash and cash equivalents of the loan parties |  |  |  |  |  |  |  |  | $ 100,000,000.0 |  |  |  |  |
Capitalized bank, legal and other fees |  |  |  |  |  |  |  | $ 3,200,000 |  |  |  |  |  |
Secured Debt | Senior Secured Credit Facility Due May 2024 | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum consolidated leverage ratio |  |  |  |  | 3.75 |  |  |  |  |  |  |  |  |
Secured Debt | Senior Secured Credit Facility Due May 2024 | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest coverage ratio |  |  |  |  |  |  |  |  |  |  | 3.00 |  |  |
Secured Debt | Senior Secured Credit Facility Due March 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum consolidated leverage ratio |  |  |  | 4.00 |  |  |  |  |  |  |  |  |  |
Secured Debt | Senior Secured Credit Facility Due March 2026 | London Interbank Offered Rate (LIBOR) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (percent) |  |  |  | 2.25% |  |  |  |  |  |  |  |  |  |
Senior Secured Credit Facility Due January 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, term |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |
Senior Secured Credit Facility Due January 2022 | Secured Debt | Revolving Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  | $ 500,000,000.0 |  |  |  |  |  |  |  |  |  | $ 500,000,000.0 |  |
Increase in aggregate revolving credit commitment |  | $ 100,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |
Euro Term Loan A | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | $ 320,800,000 |  |  |  |  |  |  |  |  |  | € 300,000,000.0 |
AUD Term Loan A | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 60,400,000 |  |  |  |  |  |  |  |  |  |  | $ 80,000,000.0
USD Senior Secured Term Loan A, due May 2024 (floating interest rate of 3.50% at December 31, 2020) | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt |  |  |  | $ 0 |  |  | 92,500,000 |  |  |  | $ 100,000,000.0 |  |  |
Senior Secured Credit Facility Due March 2026 | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum consolidated leverage ratio |  |  |  | 5.25 |  |  |  |  |  |  |  |  |  |
Consolidated leverage ratio |  |  |  | 4.20 |  |  |  |  |  |  |  |  |  |
Senior Unsecured Notes, due December 2024 (fixed interest rate of 5.25%) | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt |  |  |  | $ 0 |  |  | 375,000,000.0 |  |  |  |  |  |  |
Stated interest rate (percent) | 5.25% |  |  | 5.25% |  |  |  |  |  |  |  |  |  |
Repayments of outstanding borrowings | $ 178,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate redemption price |  |  |  |  |  | $ 390,600,000 |  |  |  |  |  |  |  |
Redemption price, principal |  |  |  |  |  | 375,000,000 |  |  |  |  |  |  |  |
Redemption price, call premium |  |  |  |  |  | 9,800,000 |  |  |  |  |  |  |  |
Redemption price, accrued and unpaid interest |  |  |  |  |  | $ 5,800,000 |  |  |  |  |  |  |  |
Senior Unsecured Notes, due March 2029 (fixed interest rate of 4.25%) | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount | 575,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt |  |  |  | $ 575,000,000.0 |  |  | $ 0 |  |  |  |  |  |  |
Capitalized bank, legal and other fees | $ 8,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate (percent) | 4.25% |  |  | 4.25% |  |  |  |  |  |  |  |  |  |
Senior Secured Credit Facility Due May 2024 | Secured Debt | Revolving Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  | $ 600,000,000.0 |  |  |
Total debt |  |  |  | $ 256,300,000 |  |  |  |  |  |  |  |  |  |
Amount available for borrowings under Senior Secured Revolving Credit Facilities |  |  |  | 330,900,000 |  |  |  |  |  |  |  |  |  |
Letters of credit outstanding |  |  |  | $ 12,800,000 |  |  |  |  |  |  |  |  |  |
Senior Secured Credit Facility Due May 2024 | Secured Debt | Senior Secured Credit Facility Due May 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated leverage ratio (including share repurchases and dividends) |  |  |  |  |  |  |  |  |  |  | 3.25 |  |  |

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