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Long-Term Debt - Additional Information (Detail)				3 Months Ended
Long-Term Debt - Additional Information (Detail)	Jul. 19, 2021 USD ($)	Jul. 01, 2021 USD ($)	Aug. 02, 2016 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)
Debt Instrument [Line Items]
Revolving Credit Facility	$ 100,000,000
Variable margin		0.00%
Supplementary leverage ratio		3.50
Interest coverage ratio		250.00%
Borrowings outstanding under Credit Facility	100,000,000
Outstanding letters of credit, amount				$ 4,300,000
Debt instrument, principal amount	850,000,000			1,015,000,000	$ 1,015,000,000
Outstanding borrowings				645,700,000
Total Debt	850,000,000			1,015,000,000	1,015,000,000
Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Unused line of credit commitment fee based on leverage ratio		0.09%
Maximum [Member] \| Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Variable margin		62.50%
Unused line of credit commitment fee based on leverage ratio		0.225%
London Interbank Offered Rate (LIBOR) [Member] \| Minimum [Member] \| Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Letter of Credit Facility		$ 40,000,000.0
Variable margin		1.00%
London Interbank Offered Rate (LIBOR) [Member] \| Maximum [Member] \| Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Variable margin		1.625%
Term Loan Agreement [Member]
Debt Instrument [Line Items]
Term loan facility, unused borrowing capacity, Amount				$ 665,000,000.0
Line of Credit Facility, Description				The Term Loan Facility was repaid on July 1, 2021 and terminated.
4.500% Senior Unsecured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			$ 350,000,000.0	$ 350,000,000	350,000,000
Debt instrument, interest rate			4.50%	4.50%
Debt instrument, maturity period			2021-07
Total Debt			$ 350,000,000.0	$ 350,000,000	$ 350,000,000
4.500% Senior Unsecured Notes Due 2026 [Member] \| 4.500% Senior Unsecured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate			4.50%
Redemption date			Jul. 17, 2021
Termination premium			$ 8,400,000
2.500% Senior Unsecured Notes Due 2031 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount	750,000,000
Total Debt	$ 750,000,000
2.500% Senior Unsecured Notes Due 2031 [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	2.50%
2.500% Senior Unsecured Notes Due 2031 [Member] \| 4.500% Senior Unsecured Notes Due 2026 [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt issuance costs	$ 6,000,000.0
2.500% Senior Unsecured Notes Due 2031 [Member] \| 2.500% Senior Unsecured Notes Due 2031 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 750,000,000.0
Debt instrument, interest rate		2.50%
Debt instrument, maturity period		2031-07
Percentage of principal amount redeemable		100.00%
Total Debt		$ 750,000,000.0
Debt instrument, original issue discount		$ 6,300,000
Effective interest rate		2.60%
Interest payment period		ten-year
Semi annual basis, treasury rate		20.00%
Percentage of aggregate amount repurchased		101.00%
Credit Facility, termination date		Jul. 01, 2021
2.500% Senior Unsecured Notes Due 2031 [Member] \| Redeemable On or After April 1, 2031 [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate		2.50%
Percentage of principal amount redeemable		100.00%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit Facility, principal balance				750,000,000.0
Revolving Credit Facility				0
Letter of Credit Facility				40,000,000.0
Borrowings outstanding under Credit Facility				0
Outstanding letters of credit, amount				4,300,000
Revolving Credit Facility [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Revolving Credit Facility	100,000,000.0
Borrowings outstanding under Credit Facility	$ 100,000,000.0
Revolving Credit Facility [Member] \| Swingline Loan [Member]
Debt Instrument [Line Items]
Credit Facility, principal balance				25,000,000.0
Revolving Credit Facility [Member] \| Unsecured Debt
Debt Instrument [Line Items]
Credit Facility, principal balance				$ 750,000,000.0
Line of Credit \| Maximum [Member]
Debt Instrument [Line Items]
Variable margin		0.50%
Amount of increase in borrowing capacity		$ 375,000,000.0
Letter of Credit [Member]
Debt Instrument [Line Items]
Unused line of credit commitment fee based on leverage ratio				0.125%