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Commitments and Contingent Liabilities Commitments and Contingent Liabilities (Guarantees Issued) (Details) (USD $) In Millions, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
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Insurance Treaty Guarantee [Member] |  |
Guarantor Obligations [Line Items] |  |
Guarantor Obligations, Current Carrying Value | $ 852.0 | $ 827.0
Insurance Treaty Guarantee Net Of Assets Held In Trust [Member] |  |
Guarantor Obligations [Line Items] |  |
Guarantor Obligations, Current Carrying Value | 678.0 | 648.0
Guarantee Of Borrowed Securities [Member] |  |
Guarantor Obligations [Line Items] |  |
Guarantor Obligations, Current Carrying Value | 204.0 | 93.0
Product Financing Arrangement [Member] |  |
Guarantor Obligations [Line Items] |  |
Guarantor Obligations, Current Carrying Value | 100.0 | 0
Guarantee Of Lease Obligations [Member] |  |
Guarantor Obligations [Line Items] |  |
Guarantor Obligations, Current Carrying Value | $ 7.0 | $ 8.0

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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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- Details
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Namespace Prefix: | us-gaap_
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