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Commitments, Guarantees, And Contingencies (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Loss Contingencies [Line Items] |  |  |
Outstanding committed capital to certain entities | $ 12.4 |  |
Rent expense | 108.7 | $ 93.6 | $ 78.6
Business Development Corporations [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Outstanding committed capital to certain entities | $ 8.5 |  |

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- Definition Outstanding committed capital to certain entities. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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- Details
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