Income Taxes (Detail 4) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Reconciliation of Effective Income Tax Rate
Statutory U.S. tax rate	35.00%	35.00%	35.00%
State income taxes--net of federal benefit	1.20%	1.00%	0.80%
International income taxes--net	(7.10%)	(5.30%)	(4.10%)
U.S. research and development credit	(0.20%)	(0.30%)	(0.50%)
Reserves for tax contingencies	(0.50%)	0.80%	0.80%
Restructuring actions			0.40%
Medicare Modernization Act	1.00%	(0.20%)	(0.20%)
Domestic Manufacturer's deduction	(1.40%)	(0.50%)	(0.80%)
All other--net	(0.30%)	(0.50%)	(0.30%)
Effective worldwide tax rate	27.70%	30.00%	31.10%
Reduction in deferred tax asset, elimination of subsidy	$ 84
EPS impact of deferred tax asset reduction (in dollars per diluted share)	$ 0.12
Federal, State and Foreign Tax
Gross UTB Balance at January 1	618	557	680
Additions based on tax positions related to the current year	128	121	126
Additions for tax positions of prior years	142	164	98
Reductions for tax positions of prior years	(161)	(177)	(180)
Settlements	(51)		(101)
Reductions due to lapse of applicable statute of limitations	(54)	(47)	(66)
Gross UTB Balance at December 31	622	618	557
Net UTB impacting the effective tax rate at December 31	394	425	334
Interest and penalties related to unrecognized tax benefits, expense (benefit) recognized on a gross basis	(9)	6	8
Interest and penalties related to unrecognized tax benefits, accrued on a gross basis	52	53
Deferred tax assets valuation allowance	128	23
Federal
Operating Loss Carryforwards
Operating loss carryforwards	15
Operating loss carryforwards expiration dates high end of range (in years)	20
State
Operating Loss Carryforwards
Operating loss carryforwards	13
Operating loss carryforwards expiration dates low end of range (in years)	5
Operating loss carryforwards expiration dates high end of range (in years)	10
International
Operating Loss Carryforwards
Operating loss carryforwards	$ 409
Operating loss carryforwards expiration dates low end of range (in years)	1
Operating loss carryforwards expiration dates majority of high end of range (in years)	7

The reduction in the deferred tax asset attributed to the change in law for prescription drug subsidies received by the entity.

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The decrease in diluted earnings per share attributed to the reduction in the deferred tax asset resulting from the elimination of the prescription drug subsidy received by the entity.

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- Definition

The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by U.S. business tax credits generated or utilized under enacted tax laws during the period.

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- Definition

The sum of the tax effects as of the balance sheet date of the amount of excesses of tax deductions over gross income in a year which cannot be used on the tax returns in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 289

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The sum of the portions of deferred tax assets as of the balance sheet date for which, based on the weight of available evidence, it is more likely than not will not be realized through future reductions of tax-based income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 17
-Subparagraph e

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43-49

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- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 47

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Subparagraph 2
-Article 4

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- Definition

The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate shall be the regular tax rate if there are alternative tax systems.

+ References

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-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 47

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to the deduction received under enacted tax laws for Medicare prescription drug benefits.

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- Definition

The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to the deduction for qualified production activities received under enacted tax laws.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the difference between statutory income tax rates in foreign jurisdictions and the domestic federal statutory income tax rate recorded during the period.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to nondeductible restructuring charges under enacted tax laws.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to all other items not otherwise listed in the existing taxonomy.

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- Definition

The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to revisions in previously reported amounts of income tax provision.

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- Definition

The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the state and local income tax expense (benefit), net of the federal tax benefit (expense) thereon, recorded during the period.

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- Definition

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.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The gross amount of unrecognized tax benefits (tax reductions recognized in financial reports but excluded from tax returns) pertaining to uncertain tax positions taken in tax returns as of the beginning balance sheet date, excluding amounts pertaining to examined tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 48
-Paragraph 21
-Subparagraph a

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
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-Paragraph 21
-Subparagraph a(1)

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The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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-Name FASB Interpretation (FIN)
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- Definition

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Paragraph 21
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-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 48
-Paragraph 15, 16

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This element represents the total of interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 48
-Paragraph 21
-Subparagraph a(2)

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The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
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-Paragraph 21
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The gross amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 48
-Paragraph 21
-Subparagraph a(4)

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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
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