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Lease Obligations (Operating Leases) (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Lease Term in Excess of One Year [Member] |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |
Operating leases, rent expense (in dollars) | $ 20.5 | $ 18.1 | $ 59.9 | $ 51.5
Lease Term in Excess of One Year [Member] | Minimum [Member] |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |
Operating leases, term of contract (in years) | 1 year | 1 year | 1 year | 1 year
Lease Term of One Year or Less [Member] |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |
Operating leases, rent expense (in dollars) | $ 51.4 | $ 54.5 | $ 148.5 | $ 142.6
Lease Term of One Year or Less [Member] | Maximum [Member] |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |
Operating leases, term of contract (in years) | 1 year | 1 year | 1 year | 1 year

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- Definition Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Balance Type: | na
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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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- Details
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- Details
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- Details
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