Financial Instruments and Risk Management (Derivative Notional Amounts) (Details) - USD ($) $ in Millions	Apr. 01, 2017	Dec. 31, 2016	Mar. 26, 2016
Foreign exchange contracts [Member] | Hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 164.6	$ 169.2	$ 162.5
Foreign exchange contracts [Member] | Non-hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	0.0	2.1	13.5
Interest rate swaps [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	494.6	496.0	583.9
Cross currency swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 106.4	$ 0.0	$ 0.0