Supplemental Balance Sheet Information (Balance Sheet Components) (Details) - USD ($) $ in Millions		Sep. 27, 2015	Dec. 28, 2014
Derivatives, Fair Value [Line Items]
Cash		$ 71.5	$ 141.4
Cash
Derivatives, Fair Value [Line Items]
Cash	[1]	71.5	141.4
Accounts receivable
Derivatives, Fair Value [Line Items]
Allowance for doubtful accounts		6.9	7.8
Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Income tax receivable		2.8	13.6
Other assets, net
Derivatives, Fair Value [Line Items]
Deferred compensation assets		46.9	49.6
Accrued liabilities
Derivatives, Fair Value [Line Items]
Salaries and wages		88.5	108.7
Customer deposits and credits		44.5	47.9
Other long-term liabilities
Derivatives, Fair Value [Line Items]
Pension obligation - foreign plans		13.7	14.2
Postretirement benefits		11.0	11.6
Deferred compensation liabilities		43.8	45.8
Deferred tax liabilities		$ 89.4	$ 77.3

[1] The decrease in cash primarily reflects the use of cash by foreign subsidiaries to fund the ICM, Bowtech and Optech acquisitions.