Quarterly report pursuant to Section 13 or 15(d)

Debt - Senior Notes (Details)

v3.3.1.900
Debt - Senior Notes (Details) - USD ($)
 3 Months Ended 6 Months Ended
Nov. 19, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Jun. 30, 2015
Nov. 30, 2014
Oct. 31, 2014
Debt Instrument                
Cash dividends declared (in dollars per share)   $ 0.52 $ 17 $ 1.04 $ 17.5      
Discount on debt   $ 3,518,000   $ 3,518,000   $ 3,723,000    
2018 Senior Notes | Senior notes | Treasury lock | Forward contracts | Derivatives Not Designated as Hedging Instruments                
Debt Instrument                
Notional amount of derivative             $ 750,000,000  
Portion of senior notes | Cash flow hedging | Senior notes | Treasury lock | Forward contracts | Derivatives designated as hedging instruments                
Debt Instrument                
Notional amount of derivative               $ 1,000,000,000.00
Special cash dividend                
Debt Instrument                
Cash dividends declared (in dollars per share) $ 16.50   $ 16.50          
Cash dividends     $ 2,760,000,000          
Senior notes                
Debt Instrument                
Principal amount             2,500,000,000  
Discount on debt             $ 4,000,000  
Debt frequency of payment       semi-annually        
Offer to repurchase senior notes, percent of principal amount       101.00%        
Fair value   $ 2,520,000,000   $ 2,520,000,000   $ 2,520,000,000    
Senior notes | Standard & Poor's, BBplus Rating                
Debt Instrument                
Decrease in credit rating, interest rate increase       0.25%        
Senior notes | Standard & Poor's, BB Rating                
Debt Instrument                
Decrease in credit rating, interest rate increase       0.50%        
Senior notes | Standard & Poor's, BB- Rating                
Debt Instrument                
Decrease in credit rating, interest rate increase       0.75%        
Senior notes | Standard & Poor's, B Plus or Below                
Debt Instrument                
Decrease in credit rating, interest rate increase       1.00%        
Senior notes | Moody's, Ba1 Rating                
Debt Instrument                
Decrease in credit rating, interest rate increase       0.25%        
Senior notes | Moody's, Ba2 Rating                
Debt Instrument                
Decrease in credit rating, interest rate increase       0.50%        
Senior notes | Moody's, Ba3 Rating                
Debt Instrument                
Decrease in credit rating, interest rate increase       0.75%        
Senior notes | Moody's, B1 Rating                
Debt Instrument                
Decrease in credit rating, interest rate increase       1.00%