Fair Value Measurements (Financial Assets and Liabilities Carried at Fair Value) (Details) - USD ($) $ in Millions |
Mar. 30, 2018 |
Dec. 31, 2017 |
---|---|---|
Assets: | ||
Available-for-sale securities | $ 43.2 | $ 45.4 |
Liabilities: | ||
Deferred compensation plans | 59.5 | 62.9 |
Quoted Prices in Active Market (Level 1) | ||
Assets: | ||
Available-for-sale securities | 0.0 | 0.0 |
Liabilities: | ||
Deferred compensation plans | 0.0 | 0.0 |
Significant Other Observable Inputs (Level 2) | ||
Assets: | ||
Available-for-sale securities | 43.2 | 45.4 |
Liabilities: | ||
Deferred compensation plans | 59.5 | 62.9 |
Significant Unobservable Inputs (Level 3) | ||
Assets: | ||
Available-for-sale securities | 0.0 | 0.0 |
Liabilities: | ||
Deferred compensation plans | $ 0.0 | $ 0.0 |