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Investment in and Advances to Non-Consolidated Affiliates and Related Party Transactions (Details 3) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Mar. 31, 2013
Related Party Transaction [Line Items]    
Accounts receivable - related parties $ 54 $ 38
Other long-term assets-related parties 12 13
Accounts payable-related parties 53 47
Equity Method Investee [Member]
   
Related Party Transaction [Line Items]    
Accounts receivable - related parties 54 38
Other long-term assets-related parties 12 13
Accounts payable-related parties $ 53 $ 47