Intangibles and Other Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Intangibles and Other Assets
Investments in affiliates	$ 35.7		$ 35.7			$ 33.7
Intangible assets (net of accumulated amortization)	153.4		153.4			166.1
Accumulated amortization	105.6		105.6			93.7
Capitalized software (net of accumulated amortization)	62.4		62.4			65.0
Accumulated amortization	98.8		98.8			91.3
Company and trust-owned life insurance	165.2		165.2			150.9
Deferred financing costs	39.9		39.9			46.2
Other	126.6		126.6			115.6
Intangibles and Other Assets	583.2		583.2		581.2	577.5	544.6
Amortization expense of intangible assets	$ 10.5	$ 10.2	$ 20.2	$ 18.9