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Debt (Senior Secured Credit Facilities) (Details) $ in Millions	3 Months Ended
	Mar. 30, 2019 USD ($)	Mar. 30, 2019 CAD ($)	Dec. 29, 2018 USD ($)
Canadian Dealer Offered Rate (CDOR) [Member] \| Canada, Dollars
Debt Instrument [Line Items]
Interest rate	4.0572%	4.0572%
Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit term	5 years
Secured Debt [Member] \| Canadian Dealer Offered Rate (CDOR) [Member] \| Canada, Dollars
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Secured Debt [Member] \| Senior Secured Facilities [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Interest rate	6.50%	6.50%
Term Loan A Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	$ 350,000,000
Term Loan A Facility [Member] \| Senior Secured Facilities [Member] \| Canada, Dollars
Debt Instrument [Line Items]
Line of credit outstanding	22,800,000	$ 30.6	$ 29,800,000
Term Loan A Facility [Member] \| Senior Secured Facilities [Member] \| U.S. dollar
Debt Instrument [Line Items]
Line of credit outstanding	$ 38,300,000
Term Loan A Facility [Member] \| Senior Secured Facilities [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Interest rate	4.50%	4.50%
Revolving Credit Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	$ 1,000,000,000
Company availability under revolving loan facility	$ 901,500,000
Revolving Credit Facility [Member] \| Senior Secured Facilities [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Interest rate	2.00%	2.00%
Revolving Credit Facility [Member] \| Senior Secured Facilities [Member] \| Base Rate [Member] \| U.S. dollar
Debt Instrument [Line Items]
Line of credit outstanding	$ 13,000,000
Letter of Credit [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Springing adjustment, term	91 days
Line of credit, maximum borrowing capacity	$ 150,000,000
Line of credit outstanding	23,500,000
Swingline Sub-Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	$ 50,000,000
Term Loan B Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Springing adjustment, loans outstanding, period	91 days
Face amount of debt instrument	$ 525,000,000
Term Loan B Facility [Member] \| Senior Secured Facilities [Member] \| U.S. dollar
Debt Instrument [Line Items]
Line of credit outstanding	$ 485,000,000
Term Loan B Facility [Member] \| Senior Secured Facilities [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Interest rate	4.50%	4.50%
Term Loan B Facility [Member] \| Senior Secured Facilities [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Interest rate	6.50%	6.50%
Term Loan B Facility [Member] \| Senior Secured Facilities [Member] \| Base Rate [Member] \| U.S. dollar
Debt Instrument [Line Items]
Line of credit outstanding	$ 10,000,000
Foreign Line of Credit [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding	17,800,000
Secured Debt [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	$ 1,875,000,000
Secured Debt [Member] \| Term Loan A Facility [Member] \| Senior Secured Facilities [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Secured Debt [Member] \| Term Loan A Facility [Member] \| Senior Secured Facilities [Member] \| Canadian Prime Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Secured Debt [Member] \| Revolving Credit Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Company availability under revolving loan facility	$ 948,300,000
Secured Debt [Member] \| Term Loan B Facility [Member] \| Senior Secured Facilities [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| U.S. dollar
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Secured Debt [Member] \| Term Loan B Facility [Member] \| Senior Secured Facilities [Member] \| Base Rate [Member] \| U.S. dollar
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Maximum [Member] \| Letter of Credit [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Debt Instrument, Covenant, Leverage Ratio	5.5	5.5
Minimum [Member] \| Letter of Credit [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Debt Instrument, Covenant, Interest Ratio	3	3