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Borrowings and Credit Arrangements - Additional Information (Detail) - USD ($)		3 Months Ended		9 Months Ended
	Dec. 24, 2014	Dec. 26, 2015	Dec. 27, 2014	Jul. 01, 2015	Sep. 26, 2015
Debt Instrument [Line Items]
Non-cash interest expense amortization of debt discount and deferred financing costs		$ 13,200,000	$ 16,700,000
Debt extinguishment loss		0	$ 6,700,000
Convertible Notes Payable, Current		$ 143,600,000			$ 142,200,000
Credit Agreement
Debt Instrument [Line Items]
Weighted average interest rates, Borrowings outstanding under the credit agreement		1.95%	2.77%
Interest expense		$ 10,000,000	$ 17,600,000
Non-cash interest expense amortization of debt discount and deferred financing costs		$ 1,100,000	3,100,000
Term Loan [Member]
Debt Instrument [Line Items]
Weighted average interest rates, Borrowings outstanding under the credit agreement		2.17%
2022 Notes [Member]
Debt Instrument [Line Items]
Interest expense		$ 14,000,000
Non-cash interest expense amortization of debt discount and deferred financing costs		$ 1,000,000
Senior note interest rate per year		5.25%
Senior Notes
Debt Instrument [Line Items]
Interest expense			16,000,000
Non-cash interest expense amortization of debt discount and deferred financing costs			400,000
Senior note interest rate per year				6.25%
Two Thousand Ten Original Notes [Member] | Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Exceeds Percentage Of Conversion Price Of Common Stock		130.00%
Convertible Notes Payable, Current		$ 143,600,000.0
Debt Instrument, Face Amount		149,900,000.0
Amount by which the if-converted value exceeds the principal amount		$ 99,900,000.0
Term Loan B [Member] | Credit Agreement
Debt Instrument [Line Items]
Prepaid principal amount	$ 300,000,000
Debt extinguishment loss			$ (6,700,000)

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The holders of the 2007 Notes, 2010 Notes, 2012 Notes and 2013 Notes may convert the notes into shares of the Company's common stock at a conversion price of approximately $38.59 per share, $23.03 per share, $31.175 and $38.59 per share, respectively, subject to adjustment, prior to the close of business on September 15, 2037 for the 2007 and 2010 Notes, March 1, 2042 for the 2012 Notes and September 15, 2043 for the 2013 Notes upon: during any calendar quarter if the last reported sale price of the Company's common stock exceeds 130% of the conversion price for at least 20 trading days in the 30 consecutive trading days ending on the last trading day of the preceding calendar quarter.

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