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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Fixed interest rate related to the interest rate derivative.

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Nominal or face amount used to calculate payments on the derivative liability.

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Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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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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LONG-TERM DEBT - Narrative (Detail) - USD ($)					1 Months Ended	12 Months Ended
LONG-TERM DEBT - Narrative (Detail) - USD ($)	Feb. 12, 2019	Sep. 14, 2018	Oct. 31, 2016	Jun. 22, 2016	Aug. 31, 2013	Dec. 31, 2018	Jun. 08, 2018	Dec. 31, 2017	Jun. 05, 2014
Interest rate swap agreements
Debt Instrument [Line Items]
Interest rate swap agreements, notional amount						$ 150,000,000			$ 150,000,000
Interest rate on notional value (as a percent)									3.68%
2018 Refinancing Credit Agreement
Debt Instrument [Line Items]
Covenant restrictions						$ 300,000,000
Debt Instrument, Restrictive Covenants, EBITDA to Interest Expense Ratio, Minimum						3.00
Debt Instrument, Restrictive Covenants, Leverage Ratio, Maximum						3.25
Debt Instrument, Restrictive Covenants, Minimum Cash Consideration Transferred in Acquisition						$ 500,000,000
Debt Instrument, Restrictive Covenants, Leverage Ratio, Three Quarters Following Acquisition, Maximum						3.75
Debt Instrument, Restrictive Covenants, Leverage Ratio, Fourth and Fifth Quarter Following Acquisition, Maximum						3.50
2018 Refinancing Credit Agreement \| LIBOR \| Minimum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						1.00%
2018 Refinancing Credit Agreement \| LIBOR \| Maximum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						1.875%
2018 Refinancing Credit Agreement \| Base Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.00%
2018 Refinancing Credit Agreement \| Base Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.875%
2016 Refinancing Credit Agreement
Debt Instrument [Line Items]
Deferred financing cost				$ 3,300,000
2016 Refinancing Credit Agreement \| Federal Funds Effective Swap Rate
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.50%
2016 Refinancing Credit Agreement \| LIBOR
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						1.00%
2016 Refinancing Credit Agreement \| Base Rate
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.00%
2016 Refinancing Credit Agreement \| Base Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.00%
2016 Refinancing Credit Agreement \| Base Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.75%
2016 Refinancing Credit Agreement \| Alternative Rate
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						1.75%
2016 Refinancing Credit Agreement \| Alternative Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.75%
2016 Refinancing Credit Agreement \| Alternative Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						1.75%
Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount		$ 2,500,000,000.0
Senior Notes \| Floating Rate Notes, due 2021
Debt Instrument [Line Items]
Debt instrument face amount		$ 500,000,000.00
Debt Instrument, Term		1 year
Debt issuance face value (as a percent)		100.00%
Deferred financing cost		$ 3,500,000
Long-term debt						$ 496,796,000		$ 0
Senior Notes \| Floating Rate Notes, due 2021 \| LIBOR
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate		1.05%
Senior Notes \| 4.150% Senior Notes, due 2024
Debt Instrument [Line Items]
Debt instrument face amount		$ 750,000,000.0
Debt issuance face value (as a percent)		99.805%
Deferred financing cost		$ 7,400,000
Stated interest rate (as a percent)		4.15%				4.15%
Long-term debt						$ 742,957,000		0
Senior Notes \| 4.70% Senior Notes, due 2028
Debt Instrument [Line Items]
Debt instrument face amount		$ 1,250,000,000.0
Debt issuance face value (as a percent)		99.889%
Deferred financing cost		$ 10,600,000
Stated interest rate (as a percent)		4.70%				4.70%
Long-term debt						$ 1,239,657,000		$ 0
Senior Notes \| 3.45% Senior Notes, due 2026
Debt Instrument [Line Items]
Debt instrument face amount			$ 750,000,000.0
Debt issuance face value (as a percent)			99.965%
Deferred financing cost			$ 2,700,000
Stated interest rate (as a percent)			3.45%			3.45%		3.45%
Long-term debt						$ 748,282,000		$ 747,655,000
Senior Notes \| 4.375% Senior Notes, due 2023
Debt Instrument [Line Items]
Debt instrument face amount					$ 250,000,000.0
Debt issuance face value (as a percent)					99.879%
Deferred financing cost					$ 2,600,000
Stated interest rate (as a percent)					4.375%	4.375%		4.375%
Long-term debt						$ 248,823,000		$ 248,567,000
Senior Notes \| 2018 Refinancing Credit Agreement \| Letter of Credit
Debt Instrument [Line Items]
Revolving credit facility, amount						29,200,000
Covenant restrictions						1,170,800,000
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt						$ 338,112,000		$ 853,124,000
Line of Credit \| 2018 Refinancing Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility, amount							$ 1,200,000,000.0
Line of Credit Uncommitted Accordion Feature							600,000,000
Line of Credit \| 2018 Refinancing Credit Agreement \| Term Loan
Debt Instrument [Line Items]
Revolving credit facility, amount							350,000,000
Line of Credit \| 2018 Refinancing Credit Agreement \| Delayed Draw Term Loan
Debt Instrument [Line Items]
Revolving credit facility, amount							400,000,000
Line of Credit \| 2018 Refinancing Credit Agreement \| Letter of Credit
Debt Instrument [Line Items]
Revolving credit facility, amount							450,000,000
Line of Credit \| 2018 Refinancing Credit Agreement \| Swing Line Sub Facility
Debt Instrument [Line Items]
Revolving credit facility, amount							75,000,000
Line of Credit \| 2016 Refinancing Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility, amount				$ 1,200,000,000.0
Credit facility loan term, years				5 years
Line of Credit \| 2016 Refinancing Credit Agreement \| Term Loan
Debt Instrument [Line Items]
Revolving credit facility, amount				$ 400,000,000
Bridge Loan \| 2018 Refinancing Credit Agreement
Debt Instrument [Line Items]
Revolving credit facility, amount							$ 2,500,000,000
Subsequent Event \| Senior Notes
Debt Instrument [Line Items]
Interest rate increase	0.25%