Retirement Benefits (Schedule Of Expected Payments From Qualified Trust And Company Funds) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Pension Benefits \| Paid From Qualified Trust
Defined Benefit Plan Disclosure [Line Items]
2014	$ 247
2015	249
2016	255
2017	260
2018	264
2019 - 2023	1,342
Pension Benefits \| Paid From Company Funds
Defined Benefit Plan Disclosure [Line Items]
2014	3
2015	3
2016	3
2017	3
2018	3
2019 - 2023	14
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
2014, Federal Subsidy	3
2015, Federal Subsidy	4
2016, Federal Subsidy	4
2017, Federal Subsidy	4
2018, Federal Subsidy	4
2019 - 2023, Federal Subsidy	19
Postretirement Benefits \| Paid From Qualified Trust
Defined Benefit Plan Disclosure [Line Items]
2014	61
2015	63
2016	66
2017	69
2018	72
2019 - 2023	394
Postretirement Benefits \| Paid From Company Funds
Defined Benefit Plan Disclosure [Line Items]
2014	2
2015	2
2016	2
2017	2
2018	2
2019 - 2023	$ 12

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Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the fifth fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the third fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of the prescription drug subsidy receipts to be received after the fifth fiscal year following the latest fiscal year.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

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-Topic 715

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Amount of the prescription drug subsidy receipts to be received in the fifth fiscal year following the latest fiscal year.

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Amount of the prescription drug subsidy receipts to be received in the second fiscal year following the latest fiscal year.

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