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Inventories | 9 Months Ended
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Sep. 30, 2021
Inventory Disclosure [Abstract] |
Inventories | Inventories Inventories consisted of the following:
(in Millions) | September 30, 2021 |  | December 31, 2020
Finished goods | $ | 494.5 |  |  | $ | 434.6 |
Work in process | 869.5 |  |  | 621.9 |
Raw materials, supplies and other | 209.3 |  |  | 165.7 |
First-in, first-out inventory | $ | 1,573.3 |  |  | $ | 1,222.2 |
Less: Excess of first-in, first-out cost over last-in, first-out cost | (122.8) |  |  | (126.6) |
Net inventories | $ | 1,450.5 |  |  | $ | 1,095.6 |

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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