Goodwill and Other Intangible Assets Goodwill Rollforward (Detail) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Goodwill [Roll Forward] | |||
| Goodwill, beginning of period | $ 3,979.0 | $ 3,949.0 | $ 3,995.1 |
| Attributable to acquisitions | 113.2 | 21.2 | |
| Foreign currency translation & other | 20.2 | (83.2) | (67.3) |
| Goodwill, end of period | 3,999.2 | 3,979.0 | 3,949.0 |
| Professional Instrumentation | |||
| Goodwill [Roll Forward] | |||
| Goodwill, beginning of period | 2,423.7 | 2,400.6 | 2,419.8 |
| Attributable to acquisitions | 61.3 | 21.2 | |
| Foreign currency translation & other | (38.2) | (40.4) | |
| Goodwill, end of period | 2,435.9 | 2,423.7 | 2,400.6 |
| Industrial Technologies | |||
| Goodwill [Roll Forward] | |||
| Goodwill, beginning of period | 1,555.3 | 1,548.4 | 1,575.3 |
| Attributable to acquisitions | 51.9 | 0.0 | |
| Foreign currency translation & other | (45.0) | (26.9) | |
| Goodwill, end of period | $ 1,563.3 | $ 1,555.3 | $ 1,548.4 |