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Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Asset impairment and exit costs |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement losses/(gains) and other expenses | $ 1 | $ 3 | $ 12 | $ 12
Non-U.S. Pension Plans | Pension Plans |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement losses/(gains) and other expenses |  |  | 2 | (1)
Employer contribution |  |  | 408 |
Employer non-recurring contribution |  |  | 250 |
Estimated future employer contributions | 47 |  | 47 |
U.S. Pension Plans | Pension Plans |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement losses/(gains) and other expenses | 6 | $ 9 | 27 | $ 25
Employer contribution |  |  | 19 |
Estimated future employer contributions | $ 7 |  | $ 7 |

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- Definition The increase in the fair value of plan assets from non-recurring contributions made by the employer. + References No definition available. + Details
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- Definition Defined Benefit Plan, Settlement Gains (Losses) and Other Expenses + References No definition available. + Details
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- Definition Amount of contribution received by defined benefit plan from employer which increases plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(ii) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2709-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(iv)(01) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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