Debt Instrument, Covenant, Interest Coverage Ratio, Minimum

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- Definition

Debt Instrument, Covenant, Leverage Ratio, Maximum

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- Definition

Debt Issuance Redemption Discount Premium Percentage of Principal Amount

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Line of Credit Facility, Accordion Feature, Increase Limit

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

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- Definition

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

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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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Amount, after accumulated amortization, of debt discount.

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- Definition

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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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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- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Borrowing Arrangements - Additional Information (Details)	1 Months Ended					3 Months Ended
	Jan. 31, 2020 USD ($)	Dec. 31, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2012 USD ($)	Apr. 30, 2021 USD ($)
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 650,000,000.0
Senior Notes
Debt Instrument [Line Items]
Debt redemption percentage of principle amount (as a percent)						101.00%
Senior Notes \| 2020 Notes
Debt Instrument [Line Items]
Aggregate principal amount	$ 500,000,000.0					$ 500,000,000.0
Stated interest rate	2.85%
Unamortized discount	$ 1,100,000
Debt issuance costs	4,800,000
Proceeds from debt, net of issuance costs	494,100,000
Senior Notes \| 2015 Notes
Debt Instrument [Line Items]
Repayments of debt	$ 450,000,000.0
Senior Notes \| 2017 Notes due in 2027
Debt Instrument [Line Items]
Aggregate principal amount			$ 500,000,000.0
Stated interest rate			3.50%
Unamortized discount			$ 3,100,000
Debt issuance costs			4,900,000
Proceeds from debt, net of issuance costs			492,000,000.0
Senior Notes \| 2017 Notes
Debt Instrument [Line Items]
Aggregate principal amount						500,000,000.0
Repayments of debt			$ 400,000,000.0
Senior Notes \| 2015 Notes
Debt Instrument [Line Items]
Aggregate principal amount				$ 300,000,000.0		300,000,000.0
Stated interest rate				4.375%
Unamortized discount				$ 1,100,000
Debt issuance costs				2,500,000
Proceeds from debt, net of issuance costs				$ 296,400,000
Senior Notes \| 2012 Notes
Debt Instrument [Line Items]
Aggregate principal amount					$ 350,000,000.0	$ 350,000,000.0
Stated interest rate					3.60%
Unamortized discount					$ 500,000
Debt issuance costs					2,800,000
Proceeds from debt, net of issuance costs					$ 346,700,000
Revolving Credit Facility \| December 17, 2018 Credit Agreement
Debt Instrument [Line Items]
Line of credit facility, increase limit		$ 350,000,000.0
Fiscal Quarter Ending April 30, 2019 \| Revolving Credit Facility \| December 17, 2018 Credit Agreement
Debt Instrument [Line Items]
Debt covenant, interest coverage ratio, minimum		3.00
Fiscal Quarter Ending January 31, 2020 \| Revolving Credit Facility \| December 17, 2018 Credit Agreement
Debt Instrument [Line Items]
Debt covenant, leverage ratio, maximum		3.00
Minimum \| Base Rate \| Revolving Credit Facility \| December 17, 2018 Credit Agreement
Debt Instrument [Line Items]
Basis spread on variable rate						0.00%
Minimum \| London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility \| December 17, 2018 Credit Agreement
Debt Instrument [Line Items]
Basis spread on variable rate						0.90%
Maximum \| Base Rate \| Revolving Credit Facility \| December 17, 2018 Credit Agreement
Debt Instrument [Line Items]
Basis spread on variable rate						0.50%
Maximum \| London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility \| December 17, 2018 Credit Agreement
Debt Instrument [Line Items]
Basis spread on variable rate						1.50%