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Total Assets by Segment (Detail) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Segment Reporting Information [Line Items]      
Total assets $ 61,538 $ 62,843 $ 66,771
Equity Method Investments      
Segment Reporting Information [Line Items]      
Total assets 5,585 5,387 662
Latin America Segment      
Segment Reporting Information [Line Items]      
Total assets 5,156 4,673 6,470
Asia Middle East Africa Segment      
Segment Reporting Information [Line Items]      
Total assets 10,031 10,460 10,549
Europe Segment      
Segment Reporting Information [Line Items]      
Total assets 19,934 21,026 27,240
North America Segment      
Segment Reporting Information [Line Items]      
Total assets 20,694 21,175 21,287
Unallocated Assets      
Segment Reporting Information [Line Items]      
Total assets [1] $ 138 $ 122 $ 563
[1] Unallocated assets consist primarily of cash and cash equivalents, deferred income taxes, centrally held property, plant and equipment, prepaid pension assets and derivative financial instrument balances. We had debt issuance costs related to recognized debt liabilities of $40 million as of December 31, 2016, $46 million as of December 31, 2015 and $44 million as of December 31, 2014.