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Debt (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2014
Dec. 31, 2016
Mar. 24, 2017
Jun. 12, 2015
Apr. 09, 2014
Debt Instrument [Line Items]            
Debt Issuance Cost $ 2          
Short-term debt [Abstract]            
Current portion of long-term debt 1   $ 3      
Other - short-term 48   33      
Short-term debt 49   36      
Long-term debt            
Long-term debt 347   346      
Interest Expense, Debt 1          
Amended LOC Agreement Facility Capacity $ 15          
LOC Collateral Percentage for draws in the U.S. dollars 103.00%          
LOC collateral percentage for draws in non-U.S. currencies 110.00%          
Letters of Credit Outstanding, Amount $ 3          
LOC Facility issued by local affiliates [Member]            
Long-term debt            
Letters of Credit Outstanding, Amount 17          
Revolving Credit Facility [Member]            
Long-term debt            
Debt Instrument, face amount       $ 300   $ 200
Term Loan [Member]            
Long-term debt            
Unsecured long-term debt, non-current $ 347   $ 346      
Debt Instrument, face amount       $ 350 $ 350  
Debt Instrument, Interest Rate, Increase (Decrease) 0.50%          
Term loan, required periodic payment 1.75%          
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer 2.25%          
Debt Instrument, Maturity Date Mar. 24, 2024          
Affiliated Entity [Member]            
Long-term debt            
Line of Credit Facility, Capacity Available for Trade Purchases $ 17          
Revolving Credit Facility [Member]            
Long-term debt            
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer 2.50%          
Line of Credit Facility, Maximum Borrowing Capacity           75
borrowing capacity under swing line advances           $ 20
Debt Instrument, Maturity Date     Mar. 24, 2022      
Maximum [Member]            
Long-term debt            
Financial maintenance covenant   3.00        
Minimum [Member]            
Long-term debt            
Financial maintenance covenant   1.00        
Domestic Base Rate [Member]            
Long-term debt            
Debt Instrument, Interest Rate Terms   0.75%        
interest rate margin applied to the Eurodollar Rate   3.00%        
Domestic Base Rate [Member] | Maximum [Member]            
Long-term debt            
Applicable rate range   2.75%        
Domestic Base Rate [Member] | Minimum [Member]            
Long-term debt            
Applicable rate range   2.00%