XML 84 R70.htm IDEA: XBRL DOCUMENT v3.10.0.1
Property, Net Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]      
Impairment of Long-Lived Assets Held-for-use $ 4 $ 9 $ 1
Asset Impairment Charges 34 9 1
Fair Value, Measurements, Nonrecurring | Cost of Sales      
Property, Plant and Equipment [Line Items]      
Impairment of Long-Lived Assets Held-for-use $ 4 $ 9 $ 1