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Other Expense, Net (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Restructuring expense | $ 13.0 |  | $ 31.0 | $ 27.0 | $ 39.0
Merger, acquisition and divestiture expense | 5.0 |  | 1.0 | 6.0 | 3.0
Other operating expense |  | $ 14.0 |  | 12.0 |
Other operating income | (2.0) |  | (2.0) |  | (7.0)
Other expense, net | $ 16.0 |  | $ 30.0 | $ 45.0 | 35.0
Remy International Inc. [Member] |  |  |  |  |
Other operating income |  |  |  |  | $ (4.0)

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