Annual report pursuant to Section 13 and 15(d)

Debt - Debt Redemption (Details)

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Debt - Debt Redemption (Details) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2014
Dec. 31, 2014
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
Nov. 30, 2014
Debt Instrument [Line Items]            
Loss on extinguishment of debt and other, net   $ 131,669,000 $ 0 $ 131,669,000 $ 0  
Senior Notes | Senior Notes Due May 1, 2018            
Debt Instrument [Line Items]            
Extinguishment of debt $ 750,000,000          
Treasury Lock | Derivatives Not Designated as Hedging Instruments | Senior Notes | Senior Notes Due May 1, 2018            
Debt Instrument [Line Items]            
Derivative, gain on derivative   $ 1,200,000        
Notional amount of derivative           $ 750,000,000