Retirement Benefits (Schedule Of Accumulated Benefit Obligations Exceeding Fair Value Of Plan Assets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation (PBO)	$ 14,869	$ 15,895
Accumulated benefit obligation (ABO)	14,858	15,866
Accumulated postretirement benefit obligation (APBO)	0	0
Fair value of plan assets	10,024	9,065
ABO less fair value of plan assets	4,834	6,801
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation (PBO)	0	0
Accumulated benefit obligation (ABO)	0	0
Accumulated postretirement benefit obligation (APBO)	1,385	1,412
Fair value of plan assets	239	211
ABO less fair value of plan assets	0	0
AA [Member] \| Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation (PBO)	14,796	15,895
Accumulated benefit obligation (ABO)	14,788	15,866
Accumulated postretirement benefit obligation (APBO)	0	0
Fair value of plan assets	9,976	9,065
ABO less fair value of plan assets	4,812	6,801
AA [Member] \| Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation (PBO)	0	0
Accumulated benefit obligation (ABO)	0	0
Accumulated postretirement benefit obligation (APBO)	1,264	1,412
Fair value of plan assets	239	211
ABO less fair value of plan assets	$ 0	$ 0

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If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 55

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=32704760&loc=d3e4179-114921

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920

+ Details

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- Definition

If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

+ Details

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- Definition

If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

+ Details

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- Definition

If aggregate disclosures are presented, the aggregate benefit obligation for plans with benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920

+ Details

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- Definition

If aggregate disclosures are presented, the aggregate fair value of plan assets for plans with benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

+ Details

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