Commitments and Contingencies (Lease Commitments) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Operating and Capital Leased Assets [Line Items] [Line Items]
Expenses under real property, equipment, and sofware leases	$ 47.6		$ 47.6	$ 53.9
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Noncancelable Lease Commitments, Operating, 2014	42.2	[1],[2]
Noncancelable Lease Commitments, Operating, 2015	38.0	[1],[2]
Noncancelable Lease Commitments, Operating, 2016	36.6	[1],[2]
Noncancelable Lease Commitments, Operating, 2017	34.0	[1],[2]
Noncancelable Lease Commitments, Operating, 2018	31.7	[1],[2]
Noncancelable Lease Commitments, Operating, Thereafter	241.8	[1],[2]
Noncancelable Lease Commitments, Operating, Total minimum payments	424.3	[1],[2]
Other operating expenses excluded from future minimum lease obligations	22
Minimum sublease income	4.8
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Noncancelable Lease Commitments, Capital, 2014	24.5	[2]
Noncancelable Lease Commitments, Capital, 2015	17.9	[2]
Noncancelable Lease Commitments, Capital, 2016	4.7	[2]
Noncancelable Lease Commitments, Capital, 2017	11.6	[2]
Noncancelable Lease Commitments, Capital, 2018	4.1	[2]
Noncancelable Lease Commitments, Capital, Thereafter	39.6	[2]
Noncancelable Lease Commitments, Capital, Total minimum payments	102.4	[2]
Noncancelable Lease Commitments, Capital, Amounts representing interest	(21.1)	[2]
Noncancelable Lease Commitments, Capital, Total	$ 81.3	[2]

[1] Future minimum operating lease payments do not reflect future minimum sublease income of $4.8 million.

[2] Amounts for capital and operating lease commitments do not include certain operating expenses such as maintenance, insurance, and real estate taxes. In 2013, these charges totaled approximately $22 million.