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Pension and Postretirement Benefits - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items] |  |  |
Pension contributions | $ 161.3 | $ 101.6 | $ 147.2
Cash contributions, other postretirement benefit plans | 10.4 | 11.0 | 18.0
Other Postretirement Benefit Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated cash contributions by the company in 2014 | 19 |  |
Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated cash contributions by the company in 2014 | 188 |  |
International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated cash contributions by the company in 2014 | 108 |  |
U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated cash contributions by the company in 2014 | 80 |  |
Expected cash contributions by the company in 2014 | 80 |  |
U.S. Plans | Scenario, Previously Reported |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated cash contributions by the company in 2014 | $ 126 |  |

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- Definition Amount of the employer's best estimate of contributions expected to be paid to the plan in the current fiscal period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2709-114920 + Details
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- Definition Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period. + References No definition available. + Details
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- Definition The amount of cash or cash equivalents contributed during the reporting period by the entity to fund non-pension postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition The amount of cash or cash equivalents contributed by the entity to fund its pension plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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