Self-Insured Risks - Table 1 (Details) (USD $) In Millions, unless otherwise specified					12 Months Ended						3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013 Provision, Current Year Claims [Member]	Dec. 31, 2012 Provision, Current Year Claims [Member]	Dec. 31, 2011 Provision, Current Year Claims [Member]	Dec. 31, 2013 Provision, Prior Year Claims [Member]	Dec. 31, 2012 Provision, Prior Year Claims [Member]	Dec. 31, 2011 Provision, Prior Year Claims [Member]	Dec. 31, 2013 Statistical Confidence Level [Member]	Dec. 31, 2013 Statistical Confidence Level [Member]	Dec. 31, 2012 Statistical Confidence Level [Member]	Dec. 31, 2011 Statistical Confidence Level [Member]	Dec. 31, 2013 Discontinued Operations, Insurance Reserve [Member]	Dec. 31, 2012 Discontinued Operations, Insurance Reserve [Member]	Dec. 31, 2011 Discontinued Operations, Insurance Reserve [Member]	Dec. 31, 2013 Payments, Current Year Claims [Member]	Dec. 31, 2012 Payments, Current Year Claims [Member]	Dec. 31, 2011 Payments, Current Year Claims [Member]	Dec. 31, 2013 Payments, Prior Year Claims [Member]	Dec. 31, 2012 Payments, Prior Year Claims [Member]	Dec. 31, 2011 Payments, Prior Year Claims [Member]
Insurance Reserves [Line Items]
Self-Insurance Reserves, Balance at Beginning of Period, Gross	$ 140.3	$ 148.3	$ 153.3	$ 152.9
Reinsurance Receivables	(32.6)	(29.4)	(34.4)	(33.6)
Self-Insurance Reserves, Balance at Beginning of Period, Net	107.7	118.9	118.9	119.3
Increase (Decrease) in Self-Insurance Reserve					33.7	32.7	32.7	(5.2)	(5.3)	0.9	(6.7)	(6.7)	0	(2.8)	(1.8)	(1.9)	(3.5)	(3.9)	(4.2)	(4.2)	(27.3)	(21.3)	(23.5)
Self-Insurance Reserves, Balance at End of Period, Net	107.7	118.9	118.9	119.3
Reinsurance Receivables	32.6	29.4	34.4	33.6
Self-Insurance Reserves, Balance at End of Period, Gross	$ 140.3	$ 148.3	$ 153.3	$ 152.9