Business Acquisitions and Restructuring Charges - Restructuring Charges (Details) $ in Millions |
1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|---|
|
Jan. 31, 2016
location
|
Sep. 30, 2016
USD ($)
|
Sep. 30, 2015
USD ($)
|
Sep. 30, 2016
USD ($)
Segment
|
Sep. 30, 2015
USD ($)
|
Dec. 31, 2015
region
location
|
|
| Restructuring Cost and Reserve [Line Items] | ||||||
| Number of reportable segments/regions | 2 | 3 | ||||
| Restructuring charges | $ 7.2 | $ 0.0 | $ 33.5 | $ 0.0 | ||
| Restructuring expenditures | 9.7 | 24.2 | $ 0.0 | |||
| Consolidation of Customer Service Locations | ||||||
| Restructuring Cost and Reserve [Line Items] | ||||||
| Number of Customer Resource Centers after restructuring (in locations) | location | 3 | |||||
| Number of years to complete restructuring | 2 years | |||||
| Field Realignment | ||||||
| Restructuring Cost and Reserve [Line Items] | ||||||
| Expected charges to be incurred related to restructuring | $ 20.0 | $ 20.0 | ||||
| Minimum | ||||||
| Restructuring Cost and Reserve [Line Items] | ||||||
| Number of customer service locations to be consolidated (more than, in locations) | location | 100 | |||||