Long-Term Employee Benefit Liabilities - Future Benefit Payments (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions - 2013	$ 42
2013	29
2014	27
2015	29
2016	31
2017	33
Thereafter	200
Total	349
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions - 2013	30
2013	17
2014	15
2015	16
2016	16
2017	17
Thereafter	93
Total	174
Termination And Long Service Arrangements [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions - 2013	10
2013	10
2014	10
2015	11
2016	12
2017	13
Thereafter	95
Total	151
Retirement Medical Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions - 2013	2
2013	2
2014	2
2015	2
2016	3
2017	3
Thereafter	12
Total	$ 24

Defined benefit plan expected aggregate future benefit payments.

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- Definition

The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan in the current remaining fiscal period. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

+ References

No definition available.

+ Details

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- Definition

Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan.

+ 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 (f)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

+ Details

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- Definition

Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the fifth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the third fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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