Segment Information (Disaggregation of Revenue) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
Sep. 29, 2019 | Sep. 30, 2018 | Sep. 29, 2019 | Sep. 30, 2018 |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | $ 802.2 | $ 725.3 | $ 2,329.4 | $ 2,153.4 |
United States | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 560.7 | 504.4 | 1,631 | 1,468.3 |
Europe | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 141.6 | 128 | 391.6 | 394.5 |
All other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 99.9 | 92.9 | 306.8 | 290.6 |
Fixed Price | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 723.1 | 652.9 | 2,093.6 | 1,933.2 |
Cost Type | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 79.1 | 72.4 | 235.8 | 220.2 |
US Government | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 198.3 | 159.1 | 555.3 | 480.6 |
Other, Primarily Commercial | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 603.9 | 566.2 | 1,774.1 | 1,672.8 |
Instrumentation | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 282.9 | 256.2 | 803.5 | 757.8 |
Instrumentation | United States | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 229.9 | 215.4 | 666.1 | 612.9 |
Instrumentation | Europe | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 42.7 | 31.3 | 107.1 | 116.1 |
Instrumentation | All other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 10.3 | 9.5 | 30.3 | 28.8 |
Instrumentation | Fixed Price | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 280.8 | 252.6 | 797.5 | 745.2 |
Instrumentation | Cost Type | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 2.1 | 3.6 | 6 | 12.6 |
Instrumentation | US Government | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 20.1 | 15.4 | 52.9 | 44 |
Instrumentation | Other, Primarily Commercial | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 262.8 | 240.8 | 750.6 | 713.8 |
Digital Imaging | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 244 | 220.7 | 724.8 | 652 |
Digital Imaging | United States | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 83.4 | 62.6 | 236.1 | 178.8 |
Digital Imaging | Europe | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 71.2 | 75.8 | 213 | 213.8 |
Digital Imaging | All other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 89.4 | 82.3 | 275.7 | 259.4 |
Digital Imaging | Fixed Price | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 220.4 | 203.7 | 657.7 | 593.3 |
Digital Imaging | Cost Type | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 23.6 | 17 | 67.1 | 58.7 |
Digital Imaging | US Government | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 29.1 | 23.9 | 81.5 | 68.9 |
Digital Imaging | Other, Primarily Commercial | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 214.9 | 196.8 | 643.3 | 583.1 |
Aerospace and Defense Electronics (b) | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 177.1 | 160.3 | 519.7 | 474.2 |
Aerospace and Defense Electronics (b) | United States | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 149.2 | 138.3 | 447.4 | 407.3 |
Aerospace and Defense Electronics (b) | Europe | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 27.7 | 20.9 | 71.5 | 64.5 |
Aerospace and Defense Electronics (b) | All other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 0.2 | 1.1 | 0.8 | 2.4 |
Aerospace and Defense Electronics (b) | Fixed Price | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 175.9 | 159.3 | 517.8 | 472.5 |
Aerospace and Defense Electronics (b) | Cost Type | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 1.2 | 1 | 1.9 | 1.7 |
Aerospace and Defense Electronics (b) | US Government | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 58.6 | 41.8 | 166.6 | 131.6 |
Aerospace and Defense Electronics (b) | Other, Primarily Commercial | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 118.5 | 118.5 | 353.1 | 342.6 |
Engineered Systems | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 98.2 | 88.1 | 281.4 | 269.4 |
Engineered Systems | United States | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 98.2 | 88.1 | 281.4 | 269.3 |
Engineered Systems | Europe | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 0 | 0 | 0 | 0.1 |
Engineered Systems | All other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 0 | 0 | 0 | 0 |
Engineered Systems | Fixed Price | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 46 | 37.3 | 120.6 | 122.2 |
Engineered Systems | Cost Type | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 52.2 | 50.8 | 160.8 | 147.2 |
Engineered Systems | US Government | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 90.5 | 78 | 254.3 | 236.1 |
Engineered Systems | Other, Primarily Commercial | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | $ 7.7 | $ 10.1 | $ 27.1 | $ 33.3 |