Fair Value Measurements - Summary of Fair Value of Assets and Liabilities Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Millions |
Mar. 30, 2018 |
Dec. 31, 2017 |
| Fair Value, Inputs, Level 1 |
|
|
| Liabilities |
|
|
| Contingent consideration |
|
$ 0.0
|
| Fair Value, Inputs, Level 1 | Demand and time deposits |
|
|
| Assets |
|
|
| Cash and cash equivalents |
$ 14.5
|
71.7
|
| Fair Value, Inputs, Level 1 | Money market funds |
|
|
| Assets |
|
|
| Cash and cash equivalents |
0.4
|
0.2
|
| Fair Value, Inputs, Level 2 |
|
|
| Liabilities |
|
|
| Contingent consideration |
|
0.0
|
| Fair Value, Inputs, Level 2 | Demand and time deposits |
|
|
| Assets |
|
|
| Cash and cash equivalents |
0.0
|
0.0
|
| Fair Value, Inputs, Level 2 | Money market funds |
|
|
| Assets |
|
|
| Cash and cash equivalents |
0.0
|
0.0
|
| Fair Value, Inputs, Level 3 |
|
|
| Liabilities |
|
|
| Contingent consideration |
|
2.3
|
| Fair Value, Inputs, Level 3 | Demand and time deposits |
|
|
| Assets |
|
|
| Cash and cash equivalents |
0.0
|
0.0
|
| Fair Value, Inputs, Level 3 | Money market funds |
|
|
| Assets |
|
|
| Cash and cash equivalents |
0.0
|
0.0
|
| Estimate of Fair Value |
|
|
| Liabilities |
|
|
| Contingent consideration |
|
2.3
|
| Estimate of Fair Value | Demand and time deposits |
|
|
| Assets |
|
|
| Cash and cash equivalents |
14.5
|
71.7
|
| Estimate of Fair Value | Money market funds |
|
|
| Assets |
|
|
| Cash and cash equivalents |
$ 0.4
|
$ 0.2
|