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Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended 3 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Mar. 31, 2014
Mar. 31, 2014
Asbestos Claims [Member]
claims
Dec. 31, 2013
Asbestos Claims [Member]
claims
Mar. 31, 2013
Asbestos Claims [Member]
claims
Guarantees [Abstract]            
Exposure under guarantee     $ 275      
Estimated fair value of guarantees 40   40      
Commitments and Contingencies [Line Items]            
Outstanding letters of credit and surety bonds     331      
Number of pending asbestos claims       45,270 45,150 46,070
Number of new asbestos claims       910    
Number of asbestos claims closed or moved to inactive docket       790    
Costs for settlement and defense of asbestos claims, net of insurance recoveries and tax benefits $ 29 $ 21