Commitments, Contingencies, And Guarantees (Schedule Of Minimum Rental Commitments Under Leases Outstanding) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011
Commitments, Contingencies, And Guarantees [Abstract]
2012	$ 51
2013	42
2014	35
2015	30
2016	24
2017 and thereafter	$ 36

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Contractually required rental payments on leases meeting the criteria for capitalization, due within one year of the balance sheet date.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 16

-Subparagraph a(ii)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the fifth year from the balance sheet date.

+ References

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the fourth year from the balance sheet date.

+ References

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the third year from the balance sheet date.

+ References

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the second year from the balance sheet date.

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Contractually required rental payments due on leases meeting the criteria for capitalization, after the fifth year from the balance sheet date.

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