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Restructuring (Details) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) employee labor_union | Nov. 10, 2015
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |
Finalization of severance agreements, number of labor unions | labor_union |  |  |  |  |  |  |  | 3 |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |
Provision | $ 13.3 |  |  | $ 1.3 |  |  | $ 13.3 | $ 26.9 |
Employee Severance [Member] |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning Balance | 2.3 | $ 2.8 | $ 6.4 | 13.2 | $ 14.0 | $ 29.4 | 6.4 | 29.4 |
Provision | 1.4 |  |  | 0.3 | 7.0 | 3.3 |  |  |
Cash payments | (0.2) | (0.6) | (3.7) | (4.0) | (7.5) | (19.6) |  |  |
Translation adjustment | 0.1 | 0.1 | 0.1 | 0.2 | (0.3) | 0.9 |  |  |
Ending Balance | 3.6 | 2.3 | 2.8 | 9.7 | 13.2 | 14.0 | 3.6 | 9.7 |
Employee Severance [Member] | Drivetrain [Member] |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning Balance | 2.0 | 2.1 | 3.7 | 7.9 | 11.0 | 25.3 | 3.7 | 25.3 |
Provision | 0.7 |  |  | 0.3 | 2.4 | 2.3 |  |  |
Cash payments | (0.2) | (0.2) | (1.6) | (2.7) | (5.3) | (17.3) |  |  |
Translation adjustment | 0.1 | 0.1 | 0.0 | 0.1 | (0.2) | 0.7 |  |  |
Ending Balance | 2.6 | 2.0 | 2.1 | 5.6 | 7.9 | 11.0 | 2.6 | 5.6 |
Employee Severance [Member] | Engine [Member] |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning Balance | 0.3 | 0.7 | 2.7 | 5.3 | 3.0 | 4.1 | 2.7 | 4.1 |
Provision | 0.7 |  |  | 0.0 | 4.6 | 1.0 |  |  |
Cash payments | 0.0 | (0.4) | (2.1) | (1.3) | (2.2) | (2.3) |  |  |
Translation adjustment | 0.0 | 0.0 | 0.1 | 0.1 | (0.1) | 0.2 |  |  |
Ending Balance | 1.0 | $ 0.3 | $ 0.7 | 4.1 | $ 5.3 | $ 3.0 | 1.0 | 4.1 |
Sevcon, Inc [Member] |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |
Employee termination benefits | 0.7 |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |
Provision |  |  |  |  |  |  | 0.7 |  |
Engine [Member] |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |
Provision | $ 12.6 |  |  |  |  |  | $ 12.6 |  |
Remy International Inc. |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |
Employee termination benefits |  |  |  | 0.3 |  |  |  | 2.0 |
Other Restructuring Costs |  |  |  |  |  |  |  | 3.1 |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |
Provision |  |  |  | $ 1.3 |  |  |  | 6.1 |
Gustav Wahler GmbH u. Co. KG and its general partner |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |
Employee termination benefits |  |  |  |  |  |  |  | 4.1 |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |
Provision |  |  |  |  |  |  |  | $ 9.6 |
Drivetrain [Member] |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |
Employee termination costs, number of employees | employee |  |  |  |  |  |  |  | 450 |
Employee termination benefits |  |  |  |  |  |  |  | $ 3.0 |
Other Restructuring Costs |  |  |  |  |  |  |  | 5.2 |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |
Provision |  |  |  |  |  |  |  | $ 8.2 |
Remy International Inc. |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  |  |  |  | 100.00%

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