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Derivative Instruments and Hedging Activities - Narrative (Details)
€ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Jul. 31, 2021
USD ($)
Jun. 30, 2021
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2021
$ / shares
Jun. 01, 2021
USD ($)
Mar. 20, 2019
USD ($)
Mar. 20, 2019
EUR (€)
Sep. 30, 2018
USD ($)
Mar. 15, 2017
USD ($)
Schedule of Trading Securities and Other Trading Assets                  
Cash flow hedge gain (loss), recorded in AOCI to be reclassed within twelve months     $ 5,000,000            
Maximum term of time in cash flow hedge     4 years            
$1.0 billion 2.1% notes due July 2021                  
Schedule of Trading Securities and Other Trading Assets                  
Debt instrument, face amount     $ 1,000,000,000            
Debt Instrument, interest rate     2.10%            
$1.0 billion 2.1% notes due July 2021 | Senior notes                  
Schedule of Trading Securities and Other Trading Assets                  
Debt instrument, face amount                 $ 1,000,000,000
$1.0 billion 2.1% notes due July 2021 | Senior notes | Parent Company                  
Schedule of Trading Securities and Other Trading Assets                  
Debt Instrument, interest rate                 2.10%
Cross currency swaps                  
Schedule of Trading Securities and Other Trading Assets                  
Notional amount           $ 400,000,000 € 353    
Payments for derivative instrument $ 12,700,000                
Net loss on derivative $ (17,600,000)                
Cross currency swaps | $1.0 billion 2.1% notes due July 2021                  
Schedule of Trading Securities and Other Trading Assets                  
Derivative, fixed interest rate     0.71%     0.71% 0.71%    
Forward starting interest rate swap                  
Schedule of Trading Securities and Other Trading Assets                  
Notional amount               $ 1,500,000,000  
Terminated amount   $ 250,000,000              
Cumulative gain (loss) on cash flow hedge, after tax   31,700,000     $ 33,400,000        
Reclassification for discontinuance of interest expense   $ (1,700,000)              
Derivative, interest rate     3.22%            
Warrants                  
Schedule of Trading Securities and Other Trading Assets                  
Strike price (in Canadian dollars per share) | $ / shares       $ 24.00