Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Number of contracts.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Amount of increase in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

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Financial Instruments and Fair Value Measurements - Summary of Activity in Interest Rate Swaps (Parenthetical) (Detail) € in Millions, $ in Millions, $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended
	Jan. 31, 2018	Mar. 31, 2018 USD ($)	Jun. 30, 2018 USD ($) Contract	Jun. 30, 2018 CAD ($) Contract	Jun. 30, 2018 EUR (€)	Jun. 30, 2018 CAD ($)
Senior Notes [Member] \| Interest Rate Swaps [Member]
Derivative [Line Items]
Number of Contracts \| Contract			2	2
Notional value of derivative			$ 499.7		€ 400.0
2015 Canadian Term Loan [Member] \| Interest Rate Swaps [Member]
Derivative [Line Items]
Notional value of derivative			128.7			$ 170.5
Repayments of debt			$ 158.9	$ 201.4
Gain on derivative \| $		$ 12.5
Euribor [Member] \| Senior Notes [Member]
Derivative [Line Items]
Interest rate	0.25%		0.25%	0.25%