- Components of Our Net Deferred Tax Assets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Disclosure Components Of Our Net Deferred Tax Assets [Abstract]
U.S. federal	$ 0	$ 0
State	15	23
Foreign	75	78
Tax credit benefits	86	88
Postretirement benefits other than pensions	55	43
Pensions	56	36
Bad debts	2	1
Sales allowances	7	6
Payroll and other accruals	155	132
Valuation allowance	(139)	(135)
Total deferred tax assets	312us-gaap_DeferredTaxAssetsNet	272us-gaap_DeferredTaxAssetsNet
Tax over book depreciation	51	56
Other	59us-gaap_DeferredTaxLiabilitiesOther	51us-gaap_DeferredTaxLiabilitiesOther
Total deferred tax liabilities	110us-gaap_DeferredTaxLiabilities	107us-gaap_DeferredTaxLiabilities
Net deferred tax assets	$ 202us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 165us-gaap_DeferredTaxAssetsLiabilitiesNet

Deferred tax assets investment tax credit benefits.

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Deferred Tax Assets Operating Loss Carryforwards Us Federal.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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-Subparagraph (b),(c)

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from postretirement benefits.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from estimated returns and sales allowances.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances.

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Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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