Employee Benefit Plans (Benefit Payments) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012
Pension Benefits [Member]
Benefits expected to be paid
2013	$ 301
2014	316
2015	305
2016	315
2017	322
2018-2022	1,710
Total	3,269
Other Postretirement Benefits [Member]
Benefits expected to be paid
2013	40
2014	39
2015	36
2016	33
2017	31
2018-2022	122
Total	$ 301

Net defined benefit plan expected future benefit payments Total.

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- Definition

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.

+ 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 (f)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

+ Details

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

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

+ References

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