Fair Value Measurements (Carrying Amounts and Fair Values of Financial Instruments) (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
Carrying Amount
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
Notes payable and current portion of long-term debt	19.7	212.4
Long-term debt	21,806.1	21,516.7
Fair Value
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
Notes payable and current portion of long-term debt	19.7	212.4
Long-term debt	$ 23,019.1	$ 21,896.9