XML 67 R49.htm IDEA: XBRL DOCUMENT v3.10.0.1
Property, Plant and Equipment - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]      
Total capital expenditures $ 1,095 $ 1,014 $ 1,224
Accrued capital expenditures unpaid 331 357 343
Asset impairments and accelerated depreciation 141 334 446
Simplify to Grow Program      
Property, Plant and Equipment [Line Items]      
Asset impairments and accelerated depreciation $ 59 $ 206 $ 301