Debt (Details) - USD ($)			3 Months Ended	6 Months Ended		12 Months Ended
	Apr. 03, 2016	Jan. 15, 2016	Apr. 03, 2016	Apr. 03, 2016	Mar. 29, 2015	Sep. 27, 2015
Line of Credit Facility [Line Items]
Maximum borrowing capacity on debt		$ 2,500,000,000
Principal Outstanding	$ 2,200,000,000		$ 2,200,000,000	$ 2,200,000,000
Write off of Deferred Debt Issuance Cost				11,000,000	$ 0
Debt issuance cost				50,200,000		$ 11,700,000
Minimum
Line of Credit Facility [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.25%
Maximum
Line of Credit Facility [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.35%
Incremental term loan
Line of Credit Facility [Line Items]
Principal Outstanding	$ 450,000,000		$ 450,000,000	$ 450,000,000
Base Rate	3.50%		3.50%	3.50%
Applicable Rate	2.94%
Incremental term loan | Base Rate
Line of Credit Facility [Line Items]
Rate Margins	1.50%
Incremental term loan | Eurodollar
Line of Credit Facility [Line Items]
Rate Margins	2.50%
Eurodollar Floor	0.00%
Term Loan Facility
Line of Credit Facility [Line Items]
Principal Outstanding	$ 1,520,000,000		$ 1,520,000,000	$ 1,520,000,000
Base Rate	3.50%		3.50%	3.50%
Applicable Rate	5.25%
Term Loan Facility | Base Rate
Line of Credit Facility [Line Items]
Rate Margins	3.50%
Term Loan Facility | Eurodollar
Line of Credit Facility [Line Items]
Rate Margins	4.50%
Eurodollar Floor	0.75%
Revolving credit facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity on debt		$ 325,000,000
Principal Outstanding	$ 225,000,000		$ 225,000,000	$ 225,000,000
Applicable Rate	2.94%
Debt Instrument, Periodic Payment, Principal			100,000,000
Revolving credit facility | Eurodollar
Line of Credit Facility [Line Items]
Eurodollar Floor	0.00%
Unsecured debt
Line of Credit Facility [Line Items]
Base Rate		9.125%
Debt Instrument, Fair Value Disclosure	$ 496,100,000		496,100,000	$ 496,100,000
Debt Instrument, Face Amount		$ 450,000,000.0
Term Loan A Facility | Term Loan Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity on debt		450,000,000
Debt Instrument, Periodic Payment, Principal			$ 180,000,000
Amended And Restated Credit Agreement | Revolving credit facility | Base Rate
Line of Credit Facility [Line Items]
Base Rate	3.50%		3.50%	3.50%
Rate Margins	1.50%
Amended And Restated Credit Agreement | Revolving credit facility | Eurodollar
Line of Credit Facility [Line Items]
Rate Margins	2.50%
Term Loan B Facility | Term Loan Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity on debt		$ 1,700,000,000
Debt Instrument, Periodic Payment, Percentage Of Original Principal		0.25%
First Two Years Following Closing Date | Term Loan A Facility | Term Loan Facility
Line of Credit Facility [Line Items]
Debt Instrument, Periodic Payment, Percentage Of Original Principal		1.25%
Remaining Three Years | Term Loan A Facility | Term Loan Facility
Line of Credit Facility [Line Items]
Debt Instrument, Periodic Payment, Percentage Of Original Principal		2.50%
Line of credit
Line of Credit Facility [Line Items]
Debt extinguishment charges			$ 72,300,000
Write off of Deferred Debt Issuance Cost			11,000,000
Gains (Losses) on Extinguishment of Debt			$ 61,300,000