Leases (Tables)

12 Months Ended

Dec. 31, 2012

Leases [Abstract]

Rent Expense [Table Text Block]

Rent expense for the three years ended December 31, 2012, was (in millions):

	2012		2011		2010
Office base rent	$	390.5	$	381.6	$	374.4
Less third party sublease rent	10.4		12.8		16.3
Net office rent	380.1		368.8		358.1
Equipment rent	36.3		42.7		46.4
	$	416.4	$	411.5	$	404.5

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
2013	$	399.7	$	7.6	$	392.1	$	24.1
2014	298.7		6.0		292.7		15.6
2015	229.3		4.0		225.3		8.5
2016	170.0		1.3		168.7		4.5
2017	146.5		1.0		145.5		3.2
Thereafter	359.4		0.2		359.2		3.1
	$	1,603.6	$	20.1	$	1,583.5
Total minimum lease payments							59.0
Less interest component							1.7
Present value of minimum lease payments							$	57.3

Property Under Capital Lease and Capital Lease Obligations [Table Text Block]

Property under capital lease and capital lease obligations as of December 31, 2012 and 2011 were (in millions):

	2012			2011
Property under capital lease:
Cost	$	126.3		$	111.4
Accumulated depreciation	(71.3		)	(59.4		)
	$	55.0		$	52.0
Capital lease obligations:
Current	$	23.4		$	24.1
Long-term	33.9			31.8
	$	57.3		$	55.9