Stock Plans (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Minimum Retirement Age	58 years
Restricted Stock and Deferred Stock Awards [Member]
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Number of shares of stock awards granted during period	2,400,000	2,800,000
Weighted-average grant date fair value of stock awards, per share	$ 77.74	$ 88.43
Compensation expense for stock awards	$ 66	$ 72
Unrecognized compensation cost related to non-vested stock awards	341
Stock awards vested during period	3,200,000
Restricted Stock and Deferred Stock Awards [Member] \| Minimum [Member]
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Expected period for recognition of unamortized compensation expense, in years	3 years
Restricted Stock and Deferred Stock Awards [Member] \| Grant Date Fair Value [Member]
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Fair value of vested stock awards	195
Restricted Stock and Deferred Stock Awards [Member] \| Total Fair Value [Member]
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Fair value of vested stock awards	$ 259
2012 Performance Incentive Plan [Member]
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Estimated common stock to be awarded under a stock benefit plan, maximum limit	30,000,000
Shares available for grant under the plan	24,800,140
Non Employee Directors Plan [Member]
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Estimated common stock to be awarded under a stock benefit plan, maximum limit	1,000,000
Shares available for grant under the plan	783,905
Percentage of voting shares that PMI may own, used in determining non-employee director status	50.00%

Minimum Retirement Age

No definition available.

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- Definition

Represents the lower limit of ownership in a company by PMI used in defining Non-employee directors under the stock compensation plan.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

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-Name Accounting Standards Codification

-Topic 718

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-Section 50

-Paragraph 2

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Paragraph 2

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(2)

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

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-Publisher FASB

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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