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Revenue Adoption of ASC 606 (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Accounts receivable, net | $ 288.2 | $ 253.2 |  | $ 278.2
Inventories | 214.5 | 215.2 |  | 194.4
Other current assets | 54.3 | 39.2 |  | 30.8
Other current liabilities | 76.6 | 77.0 |  | 63.3
Deferred income taxes | 13.1 | 10.4 |  | 13.4
Other long-term liabilities | 33.6 | 42.6 |  | 37.7
Retained earnings | 1,353.4 | 1,178.2 |  | 1,189.6
Net sales | 1,717.4 | 1,599.1 | $ 1,509.1 |
Cost of goods and services sold | 1,172.0 | 1,086.2 | 1,007.7 |
Other expense | (1.9) | (2.0) | (29.8) |
Income tax expense | 41.4 | 80.9 | 54.4 |
Net income | 206.9 | $ 150.7 | $ 143.6 |
Calculated under Revenue Guidance in Effect before Topic 606 [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Accounts receivable, net | 264.3 |  |  |
Inventories | 234.4 |  |  |
Other current assets | 63.4 |  |  |
Other current liabilities | 87.7 |  |  |
Deferred income taxes | 11.3 |  |  |
Other long-term liabilities | 37.8 |  |  |
Retained earnings | 1,345.0 |  |  |
Net sales | 1,720.9 |  |  |
Cost of goods and services sold | 1,172.0 |  |  |
Other expense | 1.2 |  |  |
Income tax expense | 42.6 |  |  |
Net income | 209.9 |  |  |
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 | 23.9 |  |  | 25.0
Inventories | (19.9) |  |  | (20.8)
Other current assets | (9.1) |  |  | (8.4)
Other current liabilities | (11.1) |  |  | (13.7)
Deferred income taxes | 1.8 |  |  | 3.0
Other long-term liabilities | (4.2) |  |  | (4.9)
Retained earnings | 8.4 |  |  | $ 11.4
Net sales | (3.5) |  |  |
Cost of goods and services sold | 0.0 |  |  |
Other expense | 0.7 |  |  |
Income tax expense | (1.2) |  |  |
Net income | $ (3.0) |  |  |

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