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.

No definition available.

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- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit from event reducing expected years of future service of present employees or eliminating accrual of defined benefits for some or all future services of present employees.

+ 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 (h)(7)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

+ References

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Components of Net Periodic Pension Cost (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Severance and Related Costs
Defined Benefit Plan Disclosure [Line Items]
Pension curtailment losses			$ 17
Severance and Related Costs \| 2014-2018 Restructuring Program
Defined Benefit Plan Disclosure [Line Items]
Settlement losses	$ 11	$ 15	9
Pension Plans \| U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Settlement losses	21	15	10
Pension Plans \| Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Settlement losses	$ 6	$ 6	$ 2