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Basis of Presentation (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015
Summary of Reclassification From Prior Period [Line Items] |  |  |
Prepaid pension | $ 720 |  | $ 1,033
Reclassification adjustment, amount transferred from operating activities to issuance of shares for employee benefit plans in financing activities |  | $ 213 |
Reclassification adjustment, amount transferred from account payable and accrued liabilities in operating activities to financing activities |  | 150 |
Reclassification Adjustment, amount transferred from other assets and liabilities in operating activities to financing activities |  | 63 |
Noncontrolling interests and other financing activities | $ (62) | (23) |
Dividends paid to noncontrolling interests |  | (18) |
Restructuring reserve |  | (19) |
Scenario, Previously Reported [Member] |  |  |
Summary of Reclassification From Prior Period [Line Items] |  |  |
Noncontrolling interests and other financing activities |  | $ (5) |

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- Definition Prior Period Reclassification Adjustment, Amount Transfered from Account Payable and Accrued Liabilities in Operating Activities to Financing Activities + References No definition available. + Details
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- Definition Prior Period Reclassification Adjustment, Amount Transfered from Operating Activities to Issuance of Shares for Employee Benefit Plans in Financing Activities + References No definition available. + Details
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- Definition Prior Period Reclassification Adjustment, Amount Transfered from Other Assets and Liabilities in Operating Activities to Financing Activities + References No definition available. + Details
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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=56944662&loc=d3e3291-108585 + Details
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- Definition Cumulative employer's contributions in excess of net pension cost recognized, before the adoption of the recognition provisions of FAS 158. Under FAS 158, prepaid pension costs are no longer recognized in the statement of financial position. Note that there is a separate concept for noncurrent assets relating to defined benefit pension and other defined benefit postretirement plans for use under the recognition provisions of FAS 158. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919 + Details
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- Definition Amount of cash inflow (outflow) from (to) a noncontrolling interest. Excludes dividends paid to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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