Fair Value Measurements (Financial Assets and Liabilities Carried at Fair Value) (Details) - USD ($) $ in Millions	Oct. 02, 2020	Dec. 31, 2019
Assets:
Available-for-sale debt securities	$ 29.6	$ 33.7
Investment in equity securities	235.2	110.8
Cross-currency swap derivative contracts	35.9	25.7
Liabilities:
Cross-currency swap derivative contracts	120.2	111.7
Deferred compensation plans	98.8	70.4
Quoted Prices in Active Market (Level 1)
Assets:
Available-for-sale debt securities	0.0	0.0
Investment in equity securities	16.0	0.0
Cross-currency swap derivative contracts	0.0	0.0
Liabilities:
Cross-currency swap derivative contracts	0.0	0.0
Deferred compensation plans	0.0	0.0
Significant Other Observable Inputs (Level 2)
Assets:
Available-for-sale debt securities	29.6	33.7
Investment in equity securities	0.0	0.0
Cross-currency swap derivative contracts	35.9	25.7
Liabilities:
Cross-currency swap derivative contracts	120.2	111.7
Deferred compensation plans	98.8	70.4
Significant Unobservable Inputs (Level 3)
Assets:
Available-for-sale debt securities	0.0	0.0
Investment in equity securities	0.0	0.0
Cross-currency swap derivative contracts	0.0	0.0
Liabilities:
Cross-currency swap derivative contracts	0.0	0.0
Deferred compensation plans	$ 0.0	$ 0.0