XML 107 R71.htm IDEA: XBRL DOCUMENT v3.8.0.1
Investments in Subsidiaries and Investee Companies (Condensed Data with Respect to Equity-Accounted Investees) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Investments in subsidiaries and investee companies [Line Items]      
Current assets $ 2,725 $ 2,571  
Non-current assets 5,989 5,981  
Total assets 8,714 8,552  
Current liabilities 2,328 2,023  
Non-current liabilities 3,456 3,870  
Total liabilities 5,784 5,893  
Revenue 5,418 5,363 $ 5,405
Expenses 3,746 3,703 3,602
Net income 1,672 1,660 $ 1,803
Non-controlling interests [Member]      
Investments in subsidiaries and investee companies [Line Items]      
Current assets 197 227  
Current liabilities 241 268  
Non-current liabilities 215 197  
Revenue 363 377  
Equity accounted investees [Member]      
Investments in subsidiaries and investee companies [Line Items]      
Current assets 54 260  
Non-current assets 39 568  
Total assets 93 828  
Current liabilities 25 131  
Non-current liabilities 26 406  
Total liabilities 51 537  
Revenue 207 315  
Expenses 197 279  
Net income $ 10 $ 36