Long-term Debt (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Schedule of Outstanding Long-term Debt
Advances Under $500 Million Revolving Credit Facility	$ 178.0	$ 78.0
Term Loan Facility	98.8	0
Other Notes Payable	35.9	36.4
Capital Lease Obligations	79.0	89.1
Total Long-term Debt	1,327.7	1,511.3
Less: Current Portion	(19.0)	(14.5)
Long-term Debt, Net of Current Portion	1,308.7	1,496.8
Schedule of Debt Maturities
Total	1,327.7	1,511.3
Face Amount [Member]
Schedule of Outstanding Long-term Debt
Total Long-term Debt	1,328.1
Schedule of Debt Maturities
October 1 through December 31, 2011	4.5
2012	19.4
2013	18.1
2014	16.7
2015	16.9
2016	252.3
Thereafter	1,000.2
Total	1,328.1
Net amount [Member]
Schedule of Outstanding Long-term Debt
Total Long-term Debt	1,327.7
Schedule of Debt Maturities
October 1 through December 31, 2011	4.5
2012	19.4
2013	18.1
2014	16.7
2015	16.9
2016	252.3
Thereafter	999.8
Total	1,327.7
10.75% Senior Notes due 2016 [Member]
Schedule of Outstanding Long-term Debt
Bonds Payable	0	495.5
7.25% Senior Notes due 2018 [Member]
Schedule of Outstanding Long-term Debt
Bonds Payable	336.8	275.0
8.125% Senior Notes due 2020 [Member]
Schedule of Outstanding Long-term Debt
Bonds Payable	285.7	285.5
7.75% Senior Notes due 2022 [Member]
Schedule of Outstanding Long-term Debt
Bonds Payable	312.0	250.0
Other Bond Payable [Member]
Schedule of Outstanding Long-term Debt
Bonds Payable	$ 1.5	$ 1.8