Adjusted LIBOR rate

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- Definition

Unsecured Revolving Credit Facility

+ References

No definition available.

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- Definition

The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.

+ References

No definition available.

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- 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

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
-Topic 835
-SubTopic 30
-Section 55
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- Definition

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

+ References

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- 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.

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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

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- Definition

Amount of the required periodic payments applied to principal.

+ References

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- Definition

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

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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.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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- Definition

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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

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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.

+ References

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- Definition

Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ References

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Long-Term Debt - Narrative (Detail) - USD ($)		3 Months Ended			12 Months Ended
Long-Term Debt - Narrative (Detail) - USD ($)	Dec. 21, 2018	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2018	Jun. 30, 2019	Mar. 11, 2019	Nov. 15, 2018	Jun. 28, 2017	Sep. 18, 2014	Apr. 17, 2014	Sep. 15, 2011
Debt Instrument [Line Items]
Document Period End Date		Mar. 31, 2019
Credit facility, outstanding amount		$ 601,250,000	$ 965,000,000		$ 965,000,000
Unsecured revolving credit facility		10,000,000.0	350,000,000.0		350,000,000.0			$ 600,000,000.0	$ 400,000,000.0		$ 800,000,000.0
Write off of Deferred Debt Issuance Cost			200,000
Debt Issuance Costs, Noncurrent, Net									$ 1,600,000
Debt Instrument, Periodic Payment, Principal			365,000,000.0	$ 5,000,000.0
Proceeds from Issuance of Debt			2,800,000
Unsecured term loans		360,000,000.0
Senior Notes		848,583,000	499,101,000		499,101,000
Debt Instrument, Periodic Payment	$ 250,000,000.0
Outstanding debt balance		1,494,998,000	1,506,990,000		1,506,990,000
Unsecured Senior Notes
Debt Instrument [Line Items]
Debt instrument interest rate stated percentage							4.50%			4.20%
Debt instrument, face amount										$ 500,000,000.0
Outstanding debt balance		350,000,000.0	500,000,000.0		500,000,000.0
Four Point Five Zero Zero Percent Senior Notes Due Two Thousand Twenty Nine [Member]
Debt Instrument [Line Items]
Senior Notes		$ 350,000,000.0					$ 350,000,000.0
Term Loan
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment, Principal			67,500,000
Unsecured term loans	300,000,000.0		$ 300,000,000.0		$ 300,000,000.0
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, outstanding amount										$ 475,000,000.0
Master Agreement \| Series E
Debt Instrument [Line Items]
Debt instrument interest rate stated percentage												4.50%
LIBOR
Debt Instrument [Line Items]
30-day Adjusted LIBOR Rate		2.50%
Maximum
Debt Instrument [Line Items]
Debt instrument, variable interest rate		1.75%
Maximum \| Term Loan
Debt Instrument [Line Items]
Unsecured term loans	450,000,000.0
Maximum \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Facility fee		0.25%			0.25%
Maximum \| LIBOR \| Term Loan
Debt Instrument [Line Items]
Debt instrument, variable interest rate		1.75%			1.75%
Maximum \| LIBOR \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument, variable interest rate		1.50%			1.50%
Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, variable interest rate		1.00%
Minimum [Member] \| Term Loan
Debt Instrument [Line Items]
Unsecured term loans	$ 300,000,000.0
Subsequent Event [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Year Two						$ 3,800,000