Inventories consisted of the following components (dollars in millions):
| December 31, 2016 |
December 31, 2015 |
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Purchased parts and raw materials |
$ | 57.0 | $ | 69.5 | ||||
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Work in progress |
4.5 | 5.1 | ||||||
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Service parts |
43.3 | 45.8 | ||||||
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Finished goods |
20.8 | 21.0 | ||||||
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Total inventories |
$ | 125.6 | $ | 141.4 | ||||
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