Debt Instrument, Covenant Terms, Maximum Leverage Ratio

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Debt Instrument, Covenant Terms, Maximum Secured Leverage Ratio

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Debt Instrument, Covenant Terms, Minimum Interest Coverage Ratio

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Declining percent of redemption price to principal amount.

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Make whole premium as percentage of principal amount of notes subject to redemption.

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Maximum Amount Available under Receivable Securitization

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Percent of principal amount of notes redeemable.

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Percent of redemption price to principal amount.

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

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Contractual interest rate for funds borrowed, under the debt agreement.

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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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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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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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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Amount of borrowings classified as other, maturing within one year or the normal operating cycle, if longer.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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Borrowings - Additional Information (Detail)		12 Months Ended
Borrowings - Additional Information (Detail)	Jan. 20, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Nov. 20, 2017 USD ($)	May 16, 2016 USD ($)	May 21, 2014 USD ($)
Debt Instrument [Line Items]
Ownership percentage of subsidiaries		50.00%
Total long-term debt		$ 2,158,825,000	$ 2,249,552,000
Standby Letters of Credit
Debt Instrument [Line Items]
Line of credit facility amount outstanding		$ 2,100,000	$ 3,200,000
Securitization Program
Debt Instrument [Line Items]
Interest rate		3.25%	2.31%
Maximum amount available under receivable securitization		$ 50,000,000
Securitization program, at a rate of 3.25% at December 31, 2018 and 2.31% at December 31, 2017		$ 50,000,000	$ 50,000,000
2017 Credit Agreement
Debt Instrument [Line Items]
Interest rate	2.00%
Leverage ratio, required	4.50
Maximum secured leverage ratio	3.50
Interest coverage ratio, required	3.50
2017 Credit Agreement \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.25%
2017 Credit Agreement \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%
2017 Credit Agreement \| Federal Funds
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
2017 Credit Agreement \| Adjusted LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
2017 Credit Agreement \| Adjusted LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.25%
2017 Credit Agreement \| Adjusted LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
2017 Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt, term	5 years
Maximum amount available for borrowing	$ 1,000,000,000.0
2017 Credit Agreement \| Term Loan
Debt Instrument [Line Items]
Maximum amount available for borrowing	$ 750,000,000.0
5.25% Senior Notes due 2024 \| Senior Notes
Debt Instrument [Line Items]
Basis spread on variable rate		0.50%
Interest rate		5.25%	5.25%			5.25%
Senior notes		$ 250,000,000	$ 250,000,000			$ 250,000,000
Ownership percentage of subsidiaries		100.00%
5.25% Senior Notes due 2024 \| Senior Notes \| Minimum
Debt Instrument [Line Items]
Declining percent of redemption price to principal amount		0.875%
5.25% Senior Notes due 2024 \| Senior Notes \| Maximum
Debt Instrument [Line Items]
Percent of redemption price to principal amount		102.625%
Declining percent of redemption price to principal amount		100.00%
5.25% Senior Notes due 2024 \| Senior Notes \| Debt Instrument Redemption Prior To June 15, 2019
Debt Instrument [Line Items]
Percent of redemption price to principal amount on redemption		100.00%
Make whole premium as percentage of principal amount of notes subject to redemption		1.00%
4.875% Senior Notes due 2026 \| Minimum
Debt Instrument [Line Items]
Declining percent of redemption price to principal amount		0.813%
4.875% Senior Notes due 2026 \| Maximum
Debt Instrument [Line Items]
Declining percent of redemption price to principal amount		100.00%
4.875% Senior Notes due 2026 \| Senior Notes
Debt Instrument [Line Items]
Basis spread on variable rate		50.00%
Interest rate					4.875%
Senior notes					$ 400,000,000
4.875% Senior Notes due 2026 \| Senior Notes \| Maximum
Debt Instrument [Line Items]
Percent of redemption price to principal amount		102.438%
4.625% Senior Notes due 2027
Debt Instrument [Line Items]
Debt issuance, line of credit		$ 7,900,000
4.625% Senior Notes due 2027 \| Minimum
Debt Instrument [Line Items]
Declining percent of redemption price to principal amount		0.771%
4.625% Senior Notes due 2027 \| Maximum
Debt Instrument [Line Items]
Declining percent of redemption price to principal amount		100.00%
4.625% Senior Notes due 2027 \| Senior Notes
Debt Instrument [Line Items]
Basis spread on variable rate		50.00%
Interest rate		4.625%	4.625%	4.625%
Senior notes		$ 500,000,000	$ 500,000,000	$ 500,000,000
4.625% Senior Notes due 2027 \| Senior Notes \| Maximum
Debt Instrument [Line Items]
Percent of redemption price to principal amount		102.313%
4.625% Senior Notes due 2027 \| Senior Notes \| Debt Instrument Redemption Prior To June 1, 2019
Debt Instrument [Line Items]
Percent of redemption price to principal amount on redemption		104.875%
Percent of principal amount of notes redeemable		40.00%
4.625% Senior Notes due 2027 \| Senior Notes \| Debt Instrument Redemption Prior To June 1, 2021
Debt Instrument [Line Items]
Percent of redemption price to principal amount on redemption		100.00%
Make whole premium as percentage of principal amount of notes subject to redemption		1.00%
4.625% Senior Notes due 2027 \| Senior Notes \| Debt Instrument Redemption Prior To November 15, 2020
Debt Instrument [Line Items]
Percent of redemption price to principal amount on redemption		104.625%
Percent of principal amount of notes redeemable		40.00%