Financial Instruments and Fair Value Measurements (Schedule of Carrying Amount and Fair Value of Long-term Debt) (Details) - USD ($) $ in Millions	Sep. 27, 2019	Dec. 28, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term Debt, Current Maturities	$ 717.7	$ 22.7
Total debt, fair value	3,549.6	5,269.1
Long-term Debt	5,093.2	6,134.0
Total Debt	5,810.9	6,156.7
Receivable securitization, Maturity Date of July 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Total debt, fair value	0.0	250.0
Long-term Debt	0.0	250.0
Secured Debt \| Term Loan due 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term Debt, Current Maturities	15.6	16.4
Loans Payable	1,524.7	1,613.8
Long-term Debt	1,509.1	1,597.4
Loans Payable, Fair Value Disclosure	1,136.9	1,472.4
Secured Debt \| 2017 Revolving Credit Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Total debt, fair value	900.0	220.0
Long-term Debt	900.0	220.0
Secured Debt \| Term Loan due 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term Debt, Current Maturities	4.1	6.0
Loans Payable	404.6	597.0
Long-term Debt	400.5	591.0
Loans Payable, Fair Value Disclosure	300.9	548.0
Unsecured Debt \| 4.88% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term Debt, Current Maturities	698.0	0.0
Total debt, fair value	457.9	676.6
Long-term Debt	0.0	700.0
Unsecured Debt \| 5.75% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Total debt, fair value	250.3	713.6
Long-term Debt	663.2	835.2
Unsecured Debt \| 4.75% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Total debt, fair value	99.8	336.7
Long-term Debt	350.1	500.2
Unsecured Debt \| 5.625% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Total debt, fair value	217.9	557.0
Long-term Debt	659.4	731.4
Unsecured Debt \| 5.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Total debt, fair value	179.2	479.1
Long-term Debt	596.1	692.1
Unsecured Debt \| ACOA Loan due 2028
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term Debt, Current Maturities	0.0	0.3
Loans Payable	0.0	2.2
Long-term Debt	0.0	1.9
Loans Payable, Fair Value Disclosure	0.0	2.2
Debentures \| 9.50% Debenture
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Total debt, fair value	5.1	9.7
Long-term Debt	10.4	10.4
Debentures \| 8.00% Debenture
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Total debt, fair value	1.6	3.8
Long-term Debt	$ 4.4	$ 4.4

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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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
-Paragraph 1
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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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Fair value portion of contractual obligation to pay money on demand or on fixed or determinable dates.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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