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Condensed consolidating guarantor financial information - Additional Information (Detail) - Senior Notes | Jul. 01, 2018 USD ($)
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Condensed Financial Statements Captions [Line Items] |
Ownership percentage | 100.00%
5.25% Senior Notes due 2024 |
Condensed Financial Statements Captions [Line Items] |
Debt instrument, face amount | $ 250,000,000
Debt instrument, stated interest rate | 5.25%
4.875% Senior Notes Due 2026 |
Condensed Financial Statements Captions [Line Items] |
Debt instrument, face amount | $ 400,000,000
Debt instrument, stated interest rate | 4.875%
4.625% Senior Notes due 2027 |
Condensed Financial Statements Captions [Line Items] |
Debt instrument, face amount | $ 500,000,000
Debt instrument, stated interest rate | 4.625%

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