Annual report pursuant to Section 13 and 15(d)

Debt - Senior Notes (Details)

v3.10.0.1
Debt - Senior Notes (Details) - USD ($)
6 Months Ended 12 Months Ended
Nov. 19, 2014
Dec. 31, 2014
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Nov. 30, 2014
Oct. 31, 2014
Debt Instrument              
Cash dividends declared (in dollars per share)     $ 2.52 $ 2.14 $ 2.08    
Cash dividends     $ 397,863,000 $ 338,208,000 $ 323,836,000    
Unamortized discount     $ 2,523,000 2,901,000      
Derivatives designated as hedging instruments | Portion of Senior notes | Treasury lock | Senior notes | Cash flow hedge contracts- foreign currency              
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            
Cash dividends   $ 2,760,000,000          
Senior notes              
Debt Instrument              
Face amount           $ 2,500,000,000.00  
Unamortized discount           4,000,000  
Redemption price     101.00%        
Fair value disclosure     $ 2,330,000,000 $ 2,670,000,000      
Senior notes | Standard & Poor's, BB Plus Rating              
Debt Instrument              
Decrease in credit rating, interest rate adjustment (in bps)     25.00%        
Senior notes | Standard & Poor's, BB Rating              
Debt Instrument              
Decrease in credit rating, interest rate adjustment (in bps)     50.00%        
Senior notes | Standard & Poor's, BB- Rating              
Debt Instrument              
Decrease in credit rating, interest rate adjustment (in bps)     75.00%        
Senior notes | Standard & Poor's, B Plus or Below              
Debt Instrument              
Decrease in credit rating, interest rate adjustment (in bps)     100.00%        
Senior notes | Moody's, Ba1 Rating              
Debt Instrument              
Decrease in credit rating, interest rate adjustment (in bps)     25.00%        
Senior notes | Moody's, Ba2 Rating              
Debt Instrument              
Decrease in credit rating, interest rate adjustment (in bps)     50.00%        
Senior notes | Moody's, Ba3 Rating              
Debt Instrument              
Decrease in credit rating, interest rate adjustment (in bps)     75.00%        
Senior notes | Moody's, B1 Rating              
Debt Instrument              
Decrease in credit rating, interest rate adjustment (in bps)     100.00%        
Senior notes | Senior notes Due May 1, 2018              
Debt Instrument              
Face amount           $ 750,000,000