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Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended
	Jun. 30, 2011	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Outstanding purchase orders		$ 2,400,000,000
Available for use credit line		50,000,000
Borrowings outstanding on line of credit		0
Customer remediation period expense	66,300,000
Guarantees of subsidiaries		$ 151,000,000

The floor amount as of the balance sheet date that the entity must expend to satisfy the terms of disclosed arrangements (excluding long-term commitments) in which the entity has agreed to expend funds to procure goods or services from one or more suppliers, other than under a long-term purchase commitment or an unconditional purchase obligation.

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