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

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

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

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Financial Instruments and Fair Value Measurements - Summary of Activity in Interest Rate Swaps (Parenthetical) (Detail) € in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($) Contract	Dec. 31, 2018 CAD ($) Contract	Dec. 31, 2016 USD ($)	Dec. 31, 2018 EUR (€)	Dec. 31, 2017 USD ($)	Dec. 31, 2015 USD ($)
Derivative [Line Items]
Outstanding term loan		$ 11,089,815,000				$ 9,412,631,000
JPY
Derivative [Line Items]
Outstanding term loan		1,951,844,000				1,306,380,000
Interest Rate Swaps [Member] \| JPY
Derivative [Line Items]
Notional value of derivative				$ 0			$ 925,000,000
Gains (losses) from option contracts exercised				9,900,000
Senior Notes [Member]
Derivative [Line Items]
Outstanding term loan		$ 8,304,147,000				$ 6,067,277,000
Senior Notes [Member] \| Interest Rate Swaps [Member]
Derivative [Line Items]
Number of Contracts \| Contract		2	2
Notional value of derivative		$ 499,700,000			€ 400.0
2015 Canadian Term Loan [Member] \| Interest Rate Swaps [Member]
Derivative [Line Items]
Repayments of debt		$ 158,900,000	$ 201.4
Gain on derivative	$ 12,500,000
Japanese Yen Term Loan [Member]
Derivative [Line Items]
Settlement of outstanding derivative contracts				26,300,000
Japanese Yen Term Loan [Member] \| Accumulated Other Comprehensive Income (Loss) [Member]
Derivative [Line Items]
Outstanding term loan				$ 7,600,000
Euribor [Member] \| Senior Notes [Member]
Derivative [Line Items]
Interest rate		0.30%	0.30%