Debt (Details) - USD ($) $ in Millions	Mar. 29, 2019	Dec. 28, 2018
Current maturities of long-term debt
Debt Issuance Costs, Current, Net	$ 0.3	$ 0.3
Long-term Debt, Current Maturities	20.1	22.7
Long-term debt
Long-term Debt	5,873.1	6,134.0
Total Debt	5,893.2	6,156.7
Debt Issuance Costs	55.5	64.8
Total Debt Issuance Costs	$ 55.8	65.1
Term Loan due 2025 \| Secured Debt
Schedule of Long-term Debt including Capital Lease Obligation [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	5.69%
Current maturities of long-term debt
Debt Issuance Costs, Current, Net	$ 0.1	0.1
Long-term Debt, Current Maturities	4.1	6.0
Long-term debt
Long-term Debt	401.5	591.0
Debt Issuance Costs	7.1	10.7
Loans Payable	405.6	597.0
ACOA Loan due 2028 \| Unsecured Debt
Current maturities of long-term debt
Debt Issuance Costs, Current, Net	0.0	0.0
Long-term Debt, Current Maturities	0.4	0.3
Long-term debt
Long-term Debt	1.9	1.9
Debt Issuance Costs	0.0	0.0
Loans Payable	$ 2.3	2.2
Term Loan due 2024 \| Secured Debt
Schedule of Long-term Debt including Capital Lease Obligation [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	5.35%
Current maturities of long-term debt
Debt Issuance Costs, Current, Net	$ 0.2	0.2
Long-term Debt, Current Maturities	15.6	16.4
Long-term debt
Long-term Debt	1,513.0	1,597.4
Debt Issuance Costs	18.0	19.8
Loans Payable	1,528.6	1,613.8
4.88% Senior Notes \| Unsecured Debt
Long-term debt
Long-term Debt	700.0	700.0
Debt Issuance Costs	2.6	3.2
Receivable securitization, Maturity Date of July 2020
Long-term debt
Long-term Debt	250.0	250.0
Debt Issuance Costs	0.3	0.4
9.50% Debenture \| Debentures
Long-term debt
Long-term Debt	10.4	10.4
Debt Issuance Costs	0.0	0.0
5.75% Senior Notes \| Unsecured Debt
Long-term debt
Long-term Debt	693.2	835.2
Debt Issuance Costs	5.4	7.0
8.00% Debenture \| Debentures
Long-term debt
Long-term Debt	4.4	4.4
Debt Issuance Costs	0.0	0.0
4.75% Senior Notes \| Unsecured Debt
Long-term debt
Long-term Debt	490.2	500.2
Debt Issuance Costs	3.2	3.5
5.625% Senior Notes \| Unsecured Debt
Long-term debt
Long-term Debt	721.4	731.4
Debt Issuance Costs	7.4	8.0
5.50% Senior Notes \| Unsecured Debt
Long-term debt
Long-term Debt	682.1	692.1
Debt Issuance Costs	7.3	7.7
2017 Revolving Credit Facility \| Secured Debt
Long-term debt
Long-term Debt	405.0	220.0
Debt Issuance Costs	$ 4.2	$ 4.5

[Line Items] for Schedule of Long-term Debt including Capital Lease Obligation [Table]

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