Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - EPS and New Accounting Principle (Details)

v3.7.0.1
Summary of Significant Accounting Policies - EPS and New Accounting Principle (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Earnings per share      
Weighted Average Number of Shares Outstanding, Basic 314,954 277,050  
Weighted Average Number of Shares Outstanding, Diluted 315,769 277,050  
Other Assets, Noncurrent $ 37,804   $ 26,854
Long-term debt 4,775,302   $ 4,703,973
Changes in accrued liabilities 19,339 $ 49,041  
Employee tax withholding for settlement of equity compensation awards $ (1,657) $ (117)  
Restricted stock and restricted stock unit      
Earnings per share      
Dilutive effect of equity awards (in shares) 770    
Weighted Average Anti-dilutive Awards 1,509 6,741  
Stock options      
Earnings per share      
Weighted Average Anti-dilutive Awards 683 720  
Performance share unit awards      
Earnings per share      
Dilutive effect of equity awards (in shares) 45    
Weighted Average Anti-dilutive Awards 660 214