Name:	us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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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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Period Type:	duration

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of cash or cash equivalents contributed by the entity to fund its pension plans.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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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