Inventories

Major classes of inventories are summarized as follows:



	September 30, 2018		December 31, 2017
Finished goods	$	387.8	$	301.9
Service parts	251.5		262.5
Raw materials and work in process	207.2		164.5
Total inventories	$	846.5	$	728.9

As a result of applying the correction of repairable service parts inventory retrospectively, a decrease in the inventory balance of $8.1 was reflected in the December 31, 2017 service parts balance previously reported.

The increase in finished goods inventory was primarily attributable to increased inventory in Germany and Mexico to satisfy various customer projects. Raw materials and work in process inventory increased primarily due to a build up of inventory in the U.S. to satisfy a recent large retail customer and certain supply chain issues.