Debt Instrument Maturity Year

No definition available.

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- Definition

Debt Instruments Maturity Month Year

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility Extended Maturity Date, Month and Year

+ References

No definition available.

+ Details

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- Definition

Uncommitted lines of credit used for seasonal working capital and other needs.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Uncommitted line of credit amount outstanding.

+ References

No definition available.

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Period Type:	instant

- Definition

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

+ References

No definition available.

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- Definition

Identification of the lender and information about a contractual promise to repay a short-term or long-term obligation, which includes borrowings under lines of credit, notes payable, commercial paper, bonds payable, debentures, and other contractual obligations for payment. This may include rationale for entering into the arrangement, significant terms of the arrangement, which may include amount, repayment terms, priority, collateral required, debt covenants, borrowing capacity, call features, participation rights, conversion provisions, sinking-fund requirements, voting rights, basis for conversion if convertible and remarketing provisions. The description may be provided for individual debt instruments, rational groupings of debt instruments, or by debt in total.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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Period Type:	instant

- 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.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
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-Section S99
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Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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- Definition

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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External Debt and Financing Arrangements - Additional Information (Detail) - USD ($)	1 Months Ended			9 Months Ended
	Sep. 30, 2018	Aug. 31, 2018	Jun. 30, 2015	Sep. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2016
Debt Instrument [Line Items]
Revolving credit facility, extended expiration date				2021-06
Uncommitted bank lines of credit, which provide for unsecured borrowings for working capital	$ 23,500,000			$ 23,500,000		$ 23,500,000
Uncommitted bank lines of credit, which provide for unsecured borrowings for working capital amount outstanding	0			$ 0		0
LIBOR [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate over LIBOR				0.90%
LIBOR [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate over LIBOR				1.50%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Term loan, outstanding borrowings	500,000,000			$ 500,000,000		615,000,000
Current portion of long-term debt	0			0		0	$ 0
Term Loan Facility [Member]
Debt Instrument [Line Items]
Senior unsecured notes, price		$ 525,000,000			$ 350,000,000
Debt instrument, description		In March 2018, the Company entered into a $350 million term loan for general corporate purposes that matures in March 2019. In August 2018, the Company amended and increased its existing $350 million term loan to $525 million. All terms and conditions on the amended term loan remain the same as the previous $350 million term loan. Interest rates under the term loan are variable based on LIBOR at the time of the borrowing and the Company’s long-term credit rating and can range from LIBOR + 0.625% to LIBOR + 1.25%.
Term loan maturity period		2019-03
Term Loan Facility [Member] \| LIBOR [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate over LIBOR		0.625%
Term Loan Facility [Member] \| LIBOR [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate over LIBOR		1.25%
2018 Senior Notes [Member] \| Notes due 2023 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, price	$ 600,000,000			$ 600,000,000
Senior unsecured notes, maturity year	2023
Senior unsecured notes, coupon rate	4.00%			4.00%
Senior notes, outstanding amount	$ 594,700,000			$ 594,700,000
2015 Senior Notes [Member]
Debt Instrument [Line Items]
Senior unsecured notes, price			$ 900,000,000
Senior notes, outstanding amount	$ 893,700,000			$ 893,700,000		$ 892,600,000
2015 Senior Notes [Member] \| Notes due 2020 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, price			$ 400,000,000
Senior unsecured notes, maturity year			2020
Senior unsecured notes, coupon rate			3.00%
Senior unsecured notes, maturity period			5 years
2015 Senior Notes [Member] \| Notes due 2025 [Member]
Debt Instrument [Line Items]
Senior unsecured notes, price			$ 500,000,000
Senior unsecured notes, maturity year			2025
Senior unsecured notes, coupon rate			4.00%
Senior unsecured notes, maturity period			10 years
Amended and Restated Credit Agreement [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity							$ 1,250,000,000