Debt and Financing Arrangements (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Other $ 51,382,000 $ 56,031,000
Total 5,152,350,000 5,160,370,000
Current maturities of debt 34,368,000 36,885,000
Long-term debt 5,117,982,000 5,123,485,000
Available borrowing capacity under lines of credit 179,400,000  
Loans Payable [Member]    
Debt Instrument [Line Items]    
Term loan due 2018 ($1.9 billion face value) 1,886,971,000 1,890,846,000
Debt Instrument, Face Amount 1,900,000,000 1,900,000,000
7.00% Senior Notes Due 2019 [Member]    
Debt Instrument [Line Items]    
Senior notes 1,000,000,000 1,000,000,000
Senior notes interest rate 7.00%  
9.875% Senior Notes Due 2019 [Member]    
Debt Instrument [Line Items]    
Senior notes 363,997,000 363,493,000
Senior notes interest rate 9.875%  
Debt Instrument, Face Amount 375,000,000 375,000,000
8.00% Senior Notes Due 2019 [Member]    
Debt Instrument [Line Items]    
Senior notes 350,000,000 350,000,000
Senior notes interest rate 8.00%  
7.25% Senior Notes Due 2020 [Member]    
Debt Instrument [Line Items]    
Senior notes 500,000,000 500,000,000
Senior notes interest rate 7.25%  
7.25% Senior Notes Due 2021 [Member]    
Debt Instrument [Line Items]    
Senior notes $ 1,000,000,000 $ 1,000,000,000
Senior notes interest rate 7.25%