Supplemental Cash Flow Information - Changes In Operating Assets And Liabilities, Net of Acquisitions (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Supplemental Cash Flow Elements [Abstract]
Increase in trade accounts receivable	$ (155.4)	$ (14.6)	$ (57.9)
Increase in prepaid expenses and other assets	(14.7)	(11.8)	(12.5)
Increase in accounts payable and accrued liabilities	36.4	43.8	54.1
Increase in accrued payroll and related taxes	28.5	39.2	2.4
Decrease in accrued insurance	(2.7)	(2.9)	(8.7)
Increase (decrease) in income and other taxes	10.9	5.5	(3.7)
Total changes in operating assets and liabilities	$ (97.0)	$ 59.2	$ (26.3)

The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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- Definition

The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.

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- Definition

The increase (decrease) during the reporting period of all taxes owed but not paid, including income, property and other taxes.

+ References

No definition available.

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- Definition

The increase (decrease) during the reporting period in the aggregate amount of obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits.

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- Definition

The increase (decrease) during the reporting period of all assets and liabilities used in operating activities.

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- Definition

The increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows, for example, deferred expenses, intangible assets, or income taxes.

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- Definition

The increase (decrease) during the reporting period in the amount due for insurance (or actual expenses) to cover the medical expenses and lost income for employees that are injured during the course of doing work-related activities.

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