Financial Instruments and Risk Management (Derivative Notional Amounts) (Details) - USD ($) $ in Millions	Jun. 29, 2019	Dec. 29, 2018	Jun. 30, 2018
Foreign Exchange Contract [Member] | Hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 238.1	$ 220.3	$ 209.6
Foreign Exchange Contract [Member] | Non-hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	8.5	4.8	0.0
Interest Rate Swap [Member] | Hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	141.9	181.3	395.5
Cross Currency Interest Rate Contract [Member] | Hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 79.8	$ 95.8	$ 106.4