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Long-term Debt and Other Financing Arrangements - Schedule of Long-term Debt Currency Wise (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Debt [Line Items]
Carrying Amount of Long Term Debt	$ 6,208	$ 6,184	$ 6,359
U.S. Dollars [Member]
Debt [Line Items]
Carrying Amount of Long Term Debt		5,803	5,724
Euro [Member]
Debt [Line Items]
Carrying Amount of Long Term Debt		381	635
Japanese Yen [Member]
Debt [Line Items]
Carrying Amount of Long Term Debt

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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