XML 43 R32.htm IDEA: XBRL DOCUMENT v3.4.0.3
Accounts Receivable, Net (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Accounts Receivable, Net    
Advance cash payments received from third parties to mitigate credit risk $ 52 $ 88
Standby letters of credit $ 26 $ 36
Substantially all trade accounts receivable, net, maximum age of balances past their scheduled invoice date 30 days 30 days
Allowance for doubtful accounts receivable $ 4 $ 4