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Leases (Tables) | 12 Months Ended
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Dec. 31, 2011
Leases [Abstract] |
Rent Expense [Table Text Block] | Rent expense for the three years ended December 31, 2011, was (in millions)
| 2011 |  | 2010 |  | 2009
Office rent | $ | 381.6 |  |  | $ | 374.4 |  |  | $ | 396.0 |
Less third party sublease rent | 12.8 |  |  | 16.3 |  |  | 18.9 |
Net office rent | 368.8 |  |  | 358.1 |  |  | 377.1 |
Equipment rent | 42.7 |  |  | 46.4 |  |  | 65.6 |
| $ | 411.5 |  |  | $ | 404.5 |  |  | $ | 442.7 |
Future Minimum Lease Payments Under Non-Cancelable Operating and Capital Leases [Table Text Block] | Future minimum lease payments under non-cancelable operating and capital leases, reduced by third party sublease rent receivable from existing non-cancelable subleases, are (in millions):
| Operating Leases |  | Capital Leases
| Gross Rent |  | Less Sublease Rent |  | Net Rent |  | Minimum Lease Payments
2012 | $ | 364.9 |  |  | $ | 6.9 |  |  | $ | 358.0 |  |  | $ | 24.9 |
2013 | 298.4 |  |  | 4.8 |  |  | 293.6 |  |  | 16.3 |
2014 | 228.3 |  |  | 4.0 |  |  | 224.3 |  |  | 8.5 |
2015 | 176.4 |  |  | 3.2 |  |  | 173.2 |  |  | 3.7 |
2016 | 129.7 |  |  | 1.0 |  |  | 128.7 |  |  | 2.2 |
Thereafter | 385.4 |  |  | 1.2 |  |  | 384.2 |  |  | 2.2 |
| $ | 1,583.1 |  |  | $ | 21.1 |  |  | $ | 1,562.0 |  |  |
Total minimum lease payments |  |  |  |  |  |  | 57.8 |
Less interest component |  |  |  |  |  |  | 1.9 |
Present value of minimum lease payments |  |  |  |  |  |  | $ | 55.9 |

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- Definition Tabular disclosure of future minimum lease payments as of the date of the latest balance sheet presented, in aggregate and for each of the five years succeeding fiscal years for (1) operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date and (2) for capital leases, with separate deductions from the total for the amount representing executor costs, including any profit thereon, included in the minimum lease payments and for the amount of the imputed interest necessary to reduce the net minimum lease payments to present value. + References No definition available. + Details
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- Details
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- Definition Tabular disclosure of rental expense from operating leases for each period for which an income statement is presented with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 840 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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