XML 56 R46.htm IDEA: XBRL DOCUMENT v3.21.1
INVENTORIES (Narrative) (Detail) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Inventory, Net [Abstract]    
Other inventory, capitalized costs $ 28.5 $ 29.7
Other Inventory Capitalized Costs Not Supported By Existing Firm Orders $ 12.6 $ 13.0