Debt (Details) - USD ($) $ in Millions	Sep. 27, 2019	Dec. 28, 2018
Current maturities of long-term debt
Debt Issuance Costs, Current, Net	$ 1.6	$ 0.3
Long-term Debt, Current Maturities	717.7	22.7
Long-term debt
Long-term Debt	5,093.2	6,134.0
Total Debt	5,810.9	6,156.7
Debt Issuance Costs	44.5	64.8
Total Debt Issuance Costs	46.1	65.1
Term Loan due 2025 \| Secured Debt
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	400.5	591.0
Debt Issuance Costs	6.4	10.7
Loans Payable	404.6	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	0.0	0.3
Long-term debt
Long-term Debt	0.0	1.9
Debt Issuance Costs	0.0	0.0
Loans Payable	0.0	2.2
Term Loan due 2024 \| Secured Debt
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	1,509.1	1,597.4
Debt Issuance Costs	16.4	19.8
Loans Payable	1,524.7	1,613.8
4.88% Senior Notes \| Unsecured Debt
Current maturities of long-term debt
Debt Issuance Costs, Current, Net	1.3	0.0
Long-term Debt, Current Maturities	698.0	0.0
Long-term debt
Long-term Debt	0.0	700.0
Debt Issuance Costs	0.0	3.2
Receivable securitization, Maturity Date of July 2020
Long-term debt
Long-term Debt	0.0	250.0
Debt Issuance Costs	0.0	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	663.2	835.2
Debt Issuance Costs	4.4	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	350.1	500.2
Debt Issuance Costs	2.0	3.5
5.625% Senior Notes \| Unsecured Debt
Long-term debt
Long-term Debt	659.4	731.4
Debt Issuance Costs	6.0	8.0
5.50% Senior Notes \| Unsecured Debt
Long-term debt
Long-term Debt	596.1	692.1
Debt Issuance Costs	5.9	7.7
2017 Revolving Credit Facility \| Secured Debt
Long-term debt
Long-term Debt	900.0	220.0
Debt Issuance Costs	$ 3.4	$ 4.5

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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