Inventories, Net (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Schedule Of Inventory [Line Items]
Finished goods	$ 54.2	$ 61.9
Work in process	63.3	49.1
Raw materials	125.0	124.7
Total product inventory	242.5	235.7
Inventoried costs related to long-term contracts	79.7	65.4
Less - progress payments	(53.5)	(47.2)
Inventoried costs related to long-term contracts, net	26.2	18.2
Inventories, net	$ 268.7	$ 253.9

Inventoried costs related to long term contracts net.

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Amount before last-in first-out (LIFO) and valuation reserves of merchandise or goods held by the entity that are readily available for sale.

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Amount before progress payments and reserves of inventories associated with long-term contracts or programs.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer).

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Gross amount of merchandise or goods which are partially completed, are generally comprised of raw materials, labor and factory overhead costs, and which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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Amount of advances received from customers under long-term contracts which have been offset against inventories accounts at the balance sheet date.

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