Average Investment Term, Alternative Investments

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- Definition

Number of days notice required to redeem an investment.

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- Definition

Maximum percentage of funds permitted to be invested.

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No definition available.

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- Definition

Number of Real Estate and Private Equity Partnerships

+ References

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- Definition

Number of Unfunded Non-Qualified Pension and Postretirement Plans

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- Definition

The percentage of current pension retirees participating in postretirement medical benefit plans.

+ References

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- Definition

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Accumulated Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6503844

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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- Definition

After tax net amount of gain (loss) that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases (decreases) in other comprehensive income as they arise.

+ References

No definition available.

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- Definition

The interest rate used to adjust for the time value of money for the 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 (k)(1)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ 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 (b)(3)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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- Definition

The amount of increase or decrease due to a change in the terms of an existing plan or the initiation of a new plan. A plan amendment may increase or decrease benefits, including those attributed to years of service already rendered.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 60

-Glossary Plan Amendment

-URI http://asc.fasb.org/extlink&oid=6520743

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Glossary Plan Amendment

-URI http://asc.fasb.org/extlink&oid=6520782

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)(7)

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- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

+ 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 (g)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

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- Definition

States the frequency (for example, annually, semi-annually, quarterly) with which the entity can redeem its investment, or portion thereof, for each of those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments), by major category.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 6A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=SL6742756-110258

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- Definition

The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 6A

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=SL6742756-110258

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Retirement Benefits (Details 13) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 plan partnership	Dec. 31, 2012	Dec. 31, 2011
Defined Contribution Plans Disclosure (Amounts in paragraphs)
Maximum percentage of employee compensation eligible for cash matching of employee contributions	4.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 285	$ 293	$ 297
Pension and post-retirement benefits disclosures (Amounts in paragraphs)
Percentage current pension retirees participating in medical plans	62.00%
Accumulated net after-tax actuarial losses	3,300	5,100
Number of domestic unfunded non-qualified pension and postretirement plans	11
Accumulated benefit obligation for all defined benefit pension plans	25,700	27,200
Information About Plan Assets (Amounts in paragraphs) [Abstract]
Maximum percentage of funds permitted to be invested in trust accounts	5.00%
Number of real estate and private equity partnerships	163
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	899	810
Average investment term, alternative investments	10 years
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Investment Redemption, Frequency	quarterly
Notice period for alternative investments redemptions, days	90 days
Pension Benefits
Pension and post-retirement benefits disclosures (Amounts in paragraphs)
Discount Rate	4.99%	4.12%
Plan amendments	0	(1)	640
Information About Plan Assets (Amounts in paragraphs) [Abstract]
Employer contributions	579	366
Pension Benefits \| Employer Contributions - Required
Information About Plan Assets (Amounts in paragraphs) [Abstract]
Expected 2014 employer contributions	74
Pension Benefits \| Voluntary Contributions [Member]
Information About Plan Assets (Amounts in paragraphs) [Abstract]
Employer contributions	500	300
Medical and Life Benefits
Pension and post-retirement benefits disclosures (Amounts in paragraphs)
Discount Rate	4.90%	4.02%
Plan amendments	0	0
Information About Plan Assets (Amounts in paragraphs) [Abstract]
Employer contributions	114	129
Medical and Life Benefits \| Employer Contributions - Required
Information About Plan Assets (Amounts in paragraphs) [Abstract]
Expected 2014 employer contributions	$ 90