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Inventories, Net (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Dec. 31, 2010
Inventory Disclosure [Abstract]
Raw materials	$ 528	$ 248	$ 211
Work in process	237	202	195
Finished goods	1,097	894	757
Total inventories, net	$ 1,862	$ 1,344	$ 1,163

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, 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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