Contingencies, Guarantees and Indemnifications (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating leases
Operating lease rental expense	$ 36.3	$ 41.9	$ 51.1
Operating lease obligations
Year 1: Operating lease obligations	42.3
Year 2: Operating lease obligations	37.0
Year 3: Operating lease obligations	30.9
Year 4: Operating lease obligations	23.2
Year 5: Operating lease obligations	10.8
Year 6 and thereafter: Operating lease obligations	53.9
Total operating lease obligations	198.1
Less: Future sublease rental income on noncancelable leases	7.7
Total future minimum lease payments	190.4
Capital leases
Capital lease gross asset balance	42.6	35.5
Capital lease accumulated depreciation	16.1	11.5
Capital lease depreciation expense	10.5	7.9	4.4
Capital lease future minimum lease payments
Year 1: Capital lease future minimum lease payments	7.2
Year 2: Capital lease future minimum lease payments	6.1
Year 3: Capital lease future minimum lease payments	4.5
Year 4: Capital lease future minimum lease payments	1.7
Year 5: Capital lease future minimum lease payments	0.1
Total capital lease future minimum lease payments	19.6
Less: Amounts representing interest	0.6
Net present value of minimum lease payments	$ 19.0