Decrease in net deferred tax asset and noncash charge to earnings.

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Deferred tax assets expiry year.

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- Definition

Discrete Income Tax Expense

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- Definition

Foreign tax credit carry forwards expiring year.

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- Definition

Foreign tax credits carryforward period.

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- Definition

Income tax expense, payment of interest and penalties.

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- Definition

Percentage of deferred tax asset exclusive of reversing temporary differences.

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No definition available.

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- Definition

Percentage of the effect of unrecognized tax benefit, if recorded.

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No definition available.

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- Definition

Percentage of temporary tax differences that reverse within the carryforward period.

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- Definition

Percentage of temporary tax differences that reverse within tax planning strategies.

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- Definition

Unamortized tax deductible goodwill resulting from intercompany stock sales and reorganizations.

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- Definition

Unamortized tax deduction rate on goodwill.

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- Definition

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 12

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- Definition

Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (j)

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- Definition

The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in foreign income tax contingency.

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.31)

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-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 20

-Article 7

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- Definition

Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.

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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Contingency [Line Items]
Tax benefit (charge) realized from exercise of employee stock options		$ 9	$ 1	$ 1
Unamortized tax-deductible goodwill resulting from intercompany stock sales and reorganizations		30
Unamortized tax-deduction rate on goodwill		30.00%
Percentage of temporary tax differences that reverse within the carryforward period		35.00%
Percentage of temporary tax differences that reverse within tax planning strategies		1.00%
Percentage of deferred tax asset exclusive of reversing temporary differences		64.00%
Discrete income tax charge for valuation allowances	372aa_DiscreteIncomeTaxExpense
Valuation allowance	1,804	1,668	1,804	1,400	1,398
Foreign tax credits carry forward period		10 years
Percentage of tax rate decreased		17.90%	0.60%	(0.40%)
Noncontrolling interest	2,929us-gaap_MinorityInterest	2,488us-gaap_MinorityInterest	2,929us-gaap_MinorityInterest
Income tax benefit for operational losses related to certain foreign jurisdictions that are excluded from the estimated annual effective tax rate calculation		4,600
Percentage of the effect of unrecognized tax benefit, if recorded		4.00%	(1.00%)	6.00%
Interest and penalties recognized		1	2	3
Income related to accrued interest and penalties		5	12	7
Amount accrued for payment of interest and penalties	11	9	11
Minimum [Member]
Income Tax Contingency [Line Items]
Percentage of tax rate decreased		15.25%
Maximum [Member]
Income Tax Contingency [Line Items]
Percentage of tax rate decreased		34.00%
Tax Year Two Thousand And Fifteen [Member]
Income Tax Contingency [Line Items]
Unamortized tax-deduction rate on goodwill		28.00%
Tax Year Two Thousand And Sixteen [Member]
Income Tax Contingency [Line Items]
Unamortized tax-deduction rate on goodwill		25.00%
Spanish Consolidated Tax Group [Member]
Income Tax Contingency [Line Items]
Discrete income tax charge for valuation allowances			372
Valuation allowance	237	163	237
Spanish Consolidated Tax Group [Member] \| Minimum [Member]
Income Tax Contingency [Line Items]
Deferred tax assets expiry period			2015
Spanish Consolidated Tax Group [Member] \| Maximum [Member]
Income Tax Contingency [Line Items]
Deferred tax assets expiry period			2030
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Valuation allowance		135
Foreign tax credits carry forward period		10 years
Decrease to the net deferred tax asset and noncash charge to earnings		52
Noncontrolling interest		$ 31
Foreign Tax Authority [Member] \| Minimum [Member]
Income Tax Contingency [Line Items]
Foreign tax credits expiry period		2016
Foreign Tax Authority [Member] \| Maximum [Member]
Income Tax Contingency [Line Items]
Foreign tax credits expiry period		2023