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

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-Publisher SEC
-Name Regulation S-X (SX)
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Cash received or paid on one or more derivative instruments to settle or terminate the instruments.

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Number of contracts.

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Face (par) amount of debt instrument at time of issuance.

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Fixed interest rate related to the interest rate derivative.

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

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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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For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Financial Instruments and Fair Value Measurements - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Sep. 30, 2015 USD ($) Contracts	Dec. 31, 2017 USD ($) Contracts	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) Contracts	Dec. 31, 2017 CAD	Dec. 31, 2015 JPY (¥)	Dec. 31, 2015 CAD	Dec. 31, 2014 USD ($)
Derivatives Fair Value [Line Items]
Gains (losses) from option contracts exercised		$ 12,600,000	$ 3,000,000	$ 14,600,000
Carrying Value of Debt		9,412,631,000	10,608,294,000
Principal Amount		9,469,106,000
Loss on forward derivative contracts				11,000,000
Foreign currency translation gains (losses)		554,000,000	(304,000,000)	(594,000,000)
JPY
Derivatives Fair Value [Line Items]
Carrying Value of Debt		1,300,000,000
Japanese Yen Term Loan [Member]
Derivatives Fair Value [Line Items]
Settlement of outstanding derivative contracts			26,300,000
Japanese Yen Term Loan [Member] \| Accumulated Other Comprehensive Income (Loss) [Member]
Derivatives Fair Value [Line Items]
Carrying Value of Debt		10,700,000
October 2015 [Member]
Derivatives Fair Value [Line Items]
Principal Amount				750,000,000
Foreign Currency Options [Member]
Derivatives Fair Value [Line Items]
Unrealized gains (losses) on foreign exchange transactions		$ (50,700,000)	19,100,000	22,100,000
Interest Rate Swaps [Member]
Derivatives Fair Value [Line Items]
Number of Contracts \| Contracts		3
Notional value of derivative		$ 271,200,000	271,000,000	$ 1,196,000,000	CAD 371,900,000			$ 398,000,000
Interest Rate Swaps [Member] \| 2015 Japanese Yen Term Loan [Member]
Derivatives Fair Value [Line Items]
Number of Contracts \| Contracts				2
Notional value of derivative				$ 526,300,000		¥ 65,000,000,000
Interest Rate Swaps [Member] \| 2015 Canadian Term Loan [Member]
Derivatives Fair Value [Line Items]
Number of Contracts \| Contracts				3
Notional value of derivative				$ 271,200,000			CAD 371,900,000
Interest Rate Swaps [Member] \| Future Debt Issuance [Member]
Derivatives Fair Value [Line Items]
Number of Contracts \| Contracts	2
Notional value of derivative	$ 360,000,000
Interest Rate Swaps [Member] \| Future Debt Issuance [Member] \| LIBOR [Member]
Derivatives Fair Value [Line Items]
Fixed interest rate	2.30%
Interest Rate Hedges [Member] \| JPY
Derivatives Fair Value [Line Items]
Gains (losses) from option contracts exercised			$ (9,900,000)