Segment Information Narrative (Details) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2017
USD ($)
|
Jul. 01, 2016
USD ($)
|
Jun. 30, 2017
USD ($)
segment
|
Jul. 01, 2016
USD ($)
|
|
| Segment Reporting [Abstract] | ||||
| Number of operating segments | segment | 2 | |||
| Segment Reporting Information [Line Items] | ||||
| Sales | $ 1,628.8 | $ 1,555.1 | $ 3,164.0 | $ 3,029.8 |
| Operating profit | 348.3 | 322.1 | 643.2 | 585.1 |
| Operating Segments | Professional Instrumentation | ||||
| Segment Reporting Information [Line Items] | ||||
| Sales | 759.0 | 724.2 | 1,475.1 | 1,421.6 |
| Operating profit | 184.9 | 162.4 | 342.9 | 308.4 |
| Operating Segments | Industrial Technologies | ||||
| Segment Reporting Information [Line Items] | ||||
| Sales | 869.8 | 830.9 | 1,688.9 | 1,608.2 |
| Operating profit | 181.5 | 173.4 | 334.1 | 304.1 |
| Other | ||||
| Segment Reporting Information [Line Items] | ||||
| Operating profit | $ (18.1) | $ (13.7) | $ (33.8) | $ (27.4) |