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Segment Information - Reconciliation of Segment Operating Income to Consolidated Loss Before Income Taxes (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016 | Dec. 31, 2015
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Operating profit (loss) | $ (24.8) | $ 49.5 | $ (27.5) | $ 21.9 |  |
Interest expense | (14.3) | (7.8) | (20.0) | (12.2) |  |
Other income (expense), net | (3.2) | 2.6 | (11.6) | 1.4 |  |
Cost reduction charges | (27.5) | (10.2) | (52.9) | (37.1) | $ (82.1) | $ (118.5)
Total income (loss) before income taxes | (42.3) | 44.3 | (59.1) | 11.1 |  |
Operating Segments |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Operating profit (loss) | 25.0 | 80.3 | 65.3 | 98.4 |  |
Segment Reconciling Items |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Cost reduction charges | (27.7) | (10.2) | (47.8) | (37.1) |  |
Corporate and eliminations |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Operating profit (loss) | (22.1) | $ (20.6) | (45.0) | $ (39.4) |  |
Other income (expense), net |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Cost reduction charges | 0.2 |  | (5.1) |  |  |
Other income (expense), net | Foreign currency translation adjustment |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Cost reduction charges | $ 0.2 |  | $ (5.1) |  |  |

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