Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - Additional Information (Details)

v3.20.1
Derivative Instruments and Hedging Activities - Additional Information (Details) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended
Jan. 31, 2020
Oct. 31, 2014
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2014
Mar. 31, 2020
Mar. 31, 2019
Feb. 29, 2020
Jun. 30, 2018
Nov. 30, 2014
Derivative                    
Net unrealized gains (losses) arising during the period     $ (19,333,000) $ (1,379,000)   $ (17,785,000) $ (6,567,000)      
Reclassification adjustments for net (gains) losses included in net income     $ (2,904,000) (946,000)   $ (1,252,000) (3,719,000)      
Senior notes                    
Derivative                    
Face amount       1,200,000,000     1,200,000,000     $ 2,500,000,000
Fixed-rate 3.300% Senior Notes due on March 1, 2050 | Senior notes                    
Derivative                    
Face amount               $ 750,000,000.0    
Stated interest rate     3.30%     3.30%   3.30%    
Senior notes due November 1, 2024 | Senior notes                    
Derivative                    
Face amount   $ 1,250,000,000                
Stated interest rate   4.65% 4.65%     4.65%        
Derivatives designated as hedging instruments | Senior notes | Cash flow hedge contracts - foreign currency | Treasury lock | Fixed-rate 3.300% Senior Notes due on March 1, 2050                    
Derivative                    
Term of contract 30 years                  
Derivative, notional amount $ 350,000,000.0                  
Net unrealized gains (losses) arising during the period     $ (21,500,000)              
Reclassification adjustments for net (gains) losses included in net income     100,000     $ 100,000        
Unamortized portion of the fair value of derivative     21,500,000     21,500,000        
Derivatives designated as hedging instruments | Senior notes | Cash flow hedge contracts - foreign currency | Treasury lock | 2018 Rate lock agreements                    
Derivative                    
Derivative, notional amount                 $ 500,000,000.0  
Net unrealized gains (losses) arising during the period       (13,600,000)            
Reclassification adjustments for net (gains) losses included in net income     300,000     900,000        
Unamortized portion of the fair value of derivative     12,400,000     12,400,000        
Derivatives designated as hedging instruments | Senior notes | Cash flow hedge contracts - foreign currency | Treasury lock | Portion of senior notes                    
Derivative                    
Term of contract   10 years                
Derivative, notional amount   $ 1,000,000,000.00                
Net unrealized gains (losses) arising during the period         $ 7,500,000          
Reclassification adjustments for net (gains) losses included in net income     200,000 $ 200,000   600,000 $ 400,000      
Unamortized portion of the fair value of derivative     $ 3,500,000     $ 3,500,000        
Maximum | Derivatives designated as hedging instruments | Cash flow hedge contracts - foreign currency | Treasury lock                    
Derivative                    
Term of contract           18 months