Debt Debt - Covenants (Details) - Term Loan - Credit Agreement	12 Months Ended
	Sep. 28, 2019
Less than 2.00x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	0.75%
Less than 2.00x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.75%
Greater than or equal to 2.00x and less than 2.50x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.00%
Greater than or equal to 2.00x and less than 2.50x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.00%
Greater than or equal to 2.50x and less than 3.00x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.25%
Greater than or equal to 2.50x and less than 3.00x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.25%
Greater than or equal to 3.00x and less than 3.25x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.50%
Greater than or equal to 3.00x and less than 3.25x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.50%
Greater than or equal to 3.25x and less than 3.50x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.75%
Greater than or equal to 3.25x and less than 3.50x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.75%
Greater than 3.50x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.00%
Greater than 3.50x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3.00%