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v3.20.2

Inventories (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Inventory [Line Items] |  |  |  |  |
Raw materials and supplies | $ 202.2 |  | $ 202.2 |  | $ 164.9
Work-in-process | 796.8 |  | 796.8 |  | 899.6
Finished goods | 186.5 |  | 186.5 |  | 161.3
Total inventories at current cost | 1,185.5 |  | 1,185.5 |  | 1,225.8
Adjustment from current cost to LIFO cost basis | 47.6 |  | 47.6 |  | 33.6
Inventory valuation reserves | (129.6) |  | (129.6) |  | (104.1)
Total inventories, net | 1,103.5 |  | 1,103.5 |  | 1,155.3
LIFO benefit |  |  | 14.0 | $ 5.8 |
NRV charge |  |  | (14.0) | (5.9) |
Net cost of sales impact | 0.0 | $ 0.0 | 0.0 | $ (0.1) |
Net Realizable Value Reserve [Member] |  |  |  |  |
Inventory [Line Items] |  |  |  |  |
Inventory valuation reserves | $ (47.6) |  | $ (47.6) |  | $ (33.6)

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