Pension and Postretirement Benefit Plans (Detail 4) (USD $) In Millions	Dec. 31, 2010
Future Pension and Postretirement Benefit Payments
2011 Benefit Payments, Medicare Subsidy Receipts	$ 13
2012 Benefit Payments, Medicare Subsidy Receipts	14
United States Qualified and Non-qualified Pension Benefits
Future Pension and Postretirement Benefit Payments
2011 Benefit Payments	697
2012 Benefit Payments	716
2013 Benefit Payments	734
2014 Benefit Payments	754
2015 Benefit Payments	776
Following five years	4,208
International Qualified and Non-qualified Pension Benefits
Future Pension and Postretirement Benefit Payments
2011 Benefit Payments	194
2012 Benefit Payments	204
2013 Benefit Payments	214
2014 Benefit Payments	224
2015 Benefit Payments	238
Following five years	1,378
Postretirement Benefits
Future Pension and Postretirement Benefit Payments
2011 Benefit Payments	130
2012 Benefit Payments	133
2013 Benefit Payments	130
2014 Benefit Payments	139
2015 Benefit Payments	136
Following five years	$ 751

Name:	us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount of the aggregate benefits expected to be paid in the five fiscal years thereafter (the aggregate amount of benefits expected to be paid in years 6 through 10 after the date of the latest statement of financial position).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph f

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInFiveFiscalYearsThereafter
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of the benefits expected to be paid in Year 5.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph f

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearFive
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of the benefits expected to be paid in Year 4.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph f

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearFour
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of the benefits expected to be paid in Year 1.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph f

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearOne
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of the benefits expected to be paid in Year 3.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph f

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearThree
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of the benefits expected to be paid in Year 2.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph f

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearTwo
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of the prescription drug subsidy receipts expected to be received in Year 1 after the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS106-2
-Paragraph 22

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph f

+ Details

Name:	us-gaap_PrescriptionDrugSubsidyReceiptsYearOne
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the prescription drug subsidy receipts expected to be received in Year 2 after the balance sheet date.

+ References

+ Details

Name:	us-gaap_PrescriptionDrugSubsidyReceiptsYearTwo
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant