Long-Term Debt (Financial Debt Covenants) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
Long-Term Debt [Line Items]
Annual Operating Lease Commitment	$ 30.0
Maximum [Member]
Long-Term Debt [Line Items]
Leverage Ratio (Consolidated Indebtedness/Consolidated Adj. EBITDA)	3.50
Fixed Charge Coverage Ratio (Consolidated Free Cash Flow/Consolidated Fixed Charges)	1.50
Minimum [Member]
Long-Term Debt [Line Items]
Leverage Ratio (Consolidated Indebtedness/Consolidated Adj. EBITDA)	1.00
Fixed Charge Coverage Ratio (Consolidated Free Cash Flow/Consolidated Fixed Charges)	1.00