v3.8.0.1
Accrued Expenses and Other Long-Term Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Accrued Expenses    
Defined benefit plan liabilities, current $ 33 $ 32
Wage and other employee-related liabilities, current 278 225
Environmental liabilities, current 30 29
Environmental credit obligations, current 152 214
Accrued interest expense, current 105 104
Other accrued liabilities, current 114 90
Accrued expenses 712 694
Other Long-Term Liabilities    
Defined benefit plan liabilities, noncurrent 776 742
Wage and other employee-related liabilities, noncurrent 111 103
Uncertain tax position liabilities, noncurrent 723 465
Repatriation tax liability, noncurrent 597 0
Environmental liabilities, noncurrent 232 223
Other accrued liabilities, noncurrent 290 211
Other long-term liabilities $ 2,729 $ 1,744