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Goodwill Rollforward (Details) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2018 USD ($)
Goodwill [Roll Forward] |
Goodwill | $ 1,654.3
Goodwill, Written off Related to Sale of Business Unit | (15.1)
Goodwill, Foreign Currency Translation Gain (Loss) | (8.4)
Goodwill | 1,633.0
Driveline [Member] |
Goodwill [Roll Forward] |
Goodwill | 211.1
Goodwill, Written off Related to Sale of Business Unit | 0.0
Goodwill, Foreign Currency Translation Gain (Loss) | (0.3)
Goodwill | 212.1
Metal Forming [Member] |
Goodwill [Roll Forward] |
Goodwill | 558.9
Goodwill, Written off Related to Sale of Business Unit | 0.0
Goodwill, Foreign Currency Translation Gain (Loss) | (5.6)
Goodwill | 554.2
Powertrain [Member] |
Goodwill [Roll Forward] |
Goodwill | 478.8
Goodwill, Written off Related to Sale of Business Unit | (15.1)
Goodwill, Foreign Currency Translation Gain (Loss) | (2.5)
Goodwill | 461.2
Casting [Member] |
Goodwill [Roll Forward] |
Goodwill | 405.5
Goodwill, Written off Related to Sale of Business Unit | 0.0
Goodwill, Foreign Currency Translation Gain (Loss) | 0.0
Goodwill | 405.5
Metaldyne Performance Group, Inc. [Member] |
Goodwill [Roll Forward] |
Goodwill, Acquired During Period | 0.9
Metaldyne Performance Group, Inc. [Member] | Driveline [Member] |
Goodwill [Roll Forward] |
Goodwill, Acquired During Period | 0.0
Metaldyne Performance Group, Inc. [Member] | Metal Forming [Member] |
Goodwill [Roll Forward] |
Goodwill, Acquired During Period | 0.9
Metaldyne Performance Group, Inc. [Member] | Powertrain [Member] |
Goodwill [Roll Forward] |
Goodwill, Acquired During Period | 0.0
Metaldyne Performance Group, Inc. [Member] | Casting [Member] |
Goodwill [Roll Forward] |
Goodwill, Acquired During Period | 0.0
USM Mexico Manufacturing LLC [Member] |
Goodwill [Roll Forward] |
Goodwill, Acquired During Period | 1.3
USM Mexico Manufacturing LLC [Member] | Driveline [Member] |
Goodwill [Roll Forward] |
Goodwill, Acquired During Period | 1.3
USM Mexico Manufacturing LLC [Member] | Metal Forming [Member] |
Goodwill [Roll Forward] |
Goodwill, Acquired During Period | 0.0
USM Mexico Manufacturing LLC [Member] | Powertrain [Member] |
Goodwill [Roll Forward] |
Goodwill, Acquired During Period | 0.0
USM Mexico Manufacturing LLC [Member] | Casting [Member] |
Goodwill [Roll Forward] |
Goodwill, Acquired During Period | $ 0.0

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