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Basis of Presentation (Details) - USD ($) $ in Millions | 9 Months Ended
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Sep. 30, 2016 | Sep. 30, 2015
Summary of Reclassification From Prior Period [Line Items] |  |
Reclassification adjustment, amount transferred from operating activities to issuance of shares for employee benefit plans in financing activities |  | $ 220
Reclassification adjustment, amount transferred from account payable and accrued liabilities in operating activities to financing activities |  | 103
Reclassification Adjustment, amount transferred from other assets and liabilities in operating activities to financing activities |  | 117
Noncontrolling interests and other financing activities | $ 71 | 26
Dividends paid to noncontrolling interests |  | 21
Restructuring reserve |  | 25
Scenario, Previously Reported [Member] |  |
Summary of Reclassification From Prior Period [Line Items] |  |
Noncontrolling interests and other financing activities |  | $ 5

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- Definition Amount of cash outflow in the form of ordinary dividends provided by the non-wholly owned subsidiary to noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 + Details
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