Fair Value Measurements - (Financial Assets and Liabilities Carried at Fair Value) (Details) - USD ($) $ in Millions	Apr. 03, 2020	Dec. 31, 2019
Liability
Liabilities
Noncurrent deferred compensation liability	$ 7.2	$ 7.2
Liability | Quoted Prices in Active Market (Level 1)
Liabilities
Noncurrent deferred compensation liability	0.0	0.0
Liability | Significant Other Observable Inputs (Level 2)
Liabilities
Noncurrent deferred compensation liability	7.2	7.2
Liability | Significant Unobservable Inputs (Level 3)
Liabilities
Noncurrent deferred compensation liability	0.0	0.0
Carrying Amount
Liabilities
Long-term debt	1,546.7
Fair Value
Liabilities
Long-term debt	1,546.7
Cross-currency swap derivative contracts
Assets
Swap derivate contract asset	28.1
Liabilities
Swap derivative contract liability		8.9
Cross-currency swap derivative contracts | Quoted Prices in Active Market (Level 1)
Assets
Swap derivate contract asset	0.0
Liabilities
Swap derivative contract liability		0.0
Cross-currency swap derivative contracts | Significant Other Observable Inputs (Level 2)
Assets
Swap derivate contract asset	28.1
Liabilities
Swap derivative contract liability		8.9
Cross-currency swap derivative contracts | Significant Unobservable Inputs (Level 3)
Assets
Swap derivate contract asset	0.0
Liabilities
Swap derivative contract liability		0.0
Cross-currency swap derivative contracts | Carrying Amount
Assets
Swap derivate contract asset	28.1
Cross-currency swap derivative contracts | Fair Value
Assets
Swap derivate contract asset	28.1
Interest rate swap derivative contracts
Assets
Swap derivate contract asset		0.1
Liabilities
Swap derivative contract liability	11.7
Interest rate swap derivative contracts | Quoted Prices in Active Market (Level 1)
Assets
Swap derivate contract asset		0.0
Liabilities
Swap derivative contract liability	0.0
Interest rate swap derivative contracts | Significant Other Observable Inputs (Level 2)
Assets
Swap derivate contract asset		0.1
Liabilities
Swap derivative contract liability	11.7
Interest rate swap derivative contracts | Significant Unobservable Inputs (Level 3)
Assets
Swap derivate contract asset		$ 0.0
Liabilities
Swap derivative contract liability	0.0
Interest rate swap derivative contracts | Carrying Amount
Liabilities
Swap derivative contract liability	11.7
Interest rate swap derivative contracts | Fair Value
Liabilities
Swap derivative contract liability	$ 11.7