Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified															12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 6.75% Senior Notes Due 2018 [Member]	Dec. 31, 2012 6.75% Senior Notes Due 2018 [Member]	Dec. 31, 2013 5.5% Senior Notes Due 2020 [Member]	Dec. 31, 2012 5.5% Senior Notes Due 2020 [Member]	Dec. 31, 2013 Term loan facility due 2016 [Member]	Dec. 31, 2012 Term loan facility due 2016 [Member]	Dec. 31, 2013 Revolving credit facility due 2016 [Member]	Dec. 31, 2012 Revolving credit facility due 2016 [Member]	Dec. 31, 2013 Mortgage Facility [Member]		Dec. 31, 2012 Mortgage Facility [Member]		Dec. 31, 2013 Mortgage Facility [Member] Secured Debt [Member]	Dec. 31, 2013 Capital Leases and Other Debt [Member]	Dec. 31, 2012 Capital Leases and Other Debt [Member]
Debt Instruments [Abstract]
Senior Notes			$ 396.3	$ 395.6	$ 350.0	$ 350.0
Term loan facility							500.0	500.0
Revolving credit facility									300.0	540.0
Mortgage facility											194.7	[1]	203.3	[1]
Capital leases and other debt																98.9	107.2
Debt and capital lease obligations	1,839.9	2,096.1
Less: current maturities	(30.1)	(29.8)
Long-term debt, net of current maturities	1,809.8	2,066.3
Monthly principal and interest payments on mortgage facility															1.7
Balloon payment for mortgage															$ 155.4
Debt instrument, maturity date															Nov. 30, 2017

[1] The mortgage facility requires monthly principal and interest payments of $1.7 million based on a fixed amortization schedule with a balloon payment of $155.4 million due November 2017.