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Adoption of ASC 606 (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jan. 01, 2018 | Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Accounts receivable, net | $ 296.7 |  | $ 296.7 |  | $ 278.2 | $ 253.2
Inventories | 208.2 |  | 208.2 |  | 194.4 | 215.2
Other current assets | 36.5 |  | 36.5 |  | 30.8 | 39.2
Other current liabilities | 86.2 |  | 86.2 |  | 63.3 | 77.0
Deferred income taxes | 11.8 |  | 11.8 |  | 13.4 | 10.4
Other long-term liabilities | 42.4 |  | 42.4 |  | 37.7 | 42.6
Retained earnings | 1,258.0 |  | 1,258.0 |  | 1,189.6 | $ 1,178.2
Net sales | 447.5 | $ 397.6 | 863.2 | $ 785.3 |  |
Cost of goods and services sold | 305.3 | 272.6 | 586.6 | 526.1 |  |
Research and Development Expense | 10.8 | 10.0 | 20.4 | 20.3 |  |
Other expense | 1.1 | 11.7 | 4.2 | 12.6 |  |
Income tax expense | (6.0) | (2.9) | (18.5) | (5.1) |  |
Net income | (56.1) | $ (38.8) | (99.7) | $ (99.7) |  |
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member] |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Accounts receivable, net | 19.9 |  | 19.9 |  | 25.0 |
Inventories | (16.8) |  | (16.8) |  | (20.8) |
Other current assets | (9.6) |  | (9.6) |  | (8.4) |
Other current liabilities | (10.3) |  | (10.3) |  | (13.7) |
Deferred income taxes | 1.8 |  | 1.8 |  | 3.0 |
Other long-term liabilities | (4.7) |  | (4.7) |  | (4.9) |
Retained earnings | 6.7 |  | 6.7 |  | $ 11.4 |
Net sales | (5.1) |  | (7.7) |  |  |
Cost of goods and services sold | (0.6) |  | (2.0) |  |  |
Research and Development Expense | (0.1) |  | (0.1) |  |  |
Other expense | 0.2 |  | 0.3 |  |  |
Income tax expense | 0.8 |  | 1.2 |  |  |
Net income | 3.8 |  | 4.7 |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 [Member] |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Accounts receivable, net | 276.8 |  | 276.8 |  |  |
Inventories | 225.0 |  | 225.0 |  |  |
Other current assets | 46.1 |  | 46.1 |  |  |
Other current liabilities | 96.5 |  | 96.5 |  |  |
Deferred income taxes | 10.0 |  | 10.0 |  |  |
Other long-term liabilities | 47.1 |  | 47.1 |  |  |
Retained earnings | 1,251.3 |  | 1,251.3 |  |  |
Net sales | 452.6 |  | 870.9 |  |  |
Cost of goods and services sold | 305.9 |  | 588.6 |  |  |
Research and Development Expense | 10.9 |  | 20.5 |  |  |
Other expense | 0.9 |  | 3.9 |  |  |
Income tax expense | (6.8) |  | (19.7) |  |  |
Net income | $ (59.9) |  | $ (104.4) |  |  |

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