Airplane Operating Lease Period Years

No definition available.

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- Definition

Approximate size of referenced site.

+ References

No definition available.

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- Definition

Maximum fair value residual value guarantee.

+ References

No definition available.

+ Details

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- Definition

Fair Value Of Residual Value Guarantee, Fair Value of Operating Lease Asset Threshold

+ References

No definition available.

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- Definition

Gross settlement and defense costs incurred (before insurance recoveries and tax effects).

+ References

No definition available.

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- Definition

Loss Contingency Reimbursement rate for qualifying costs of investigation and remediation activities.

+ References

No definition available.

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- Definition

Payments for airplane

+ References

No definition available.

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 5.Y.Q2)
-URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751

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- Definition

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of known and reasonably estimable amounts of recoveries from third-parties pertaining to an entity's environmental remediation obligations. An entity's balance sheet may include several assets that relate to an environmental remediation obligation. Among them are the following: a. Receivables from other potentially responsible parties that are not providing initial funding; b. anticipated recoveries from insurers; and c. anticipated recoveries from prior owners as a result of indemnification agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Commitments and Contingencies (Other Contingencies) (Detail) $ in Millions	3 Months Ended			12 Months Ended
	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2012 a	Jul. 31, 2006
Loss Contingencies [Line Items]
Airplane operating lease period, years	7
Fair Value Of Residual Value Guarantee	$ 11.1
Fair Value Of Residual Value Guarantee, Fair Value of Operating Lease Asset Threshold	14.4
Payments for airplane	6.7
Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Gross Settlement And Defense Incurred Costs	14.8	$ 28.0		$ 88.3
Environmental Claims For A Site In Goodyear Arizona
Loss Contingencies [Line Items]
Estimated liability	39.0
Amount of additional remediation activities			$ 49.0
Accrued environmental loss contingencies current	9.4
Loss contingency reimbursement rate						21.00%
Other receivables	$ 8.5
Environmental Claims For Crab Orchard National Wildlife Refuge Superfund Site
Loss Contingencies [Line Items]
Approximate size of referenced site, acres \| a					55,000