Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Narrative (Details)

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Borrowings - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended
Jun. 30, 2021
May 31, 2021
May 31, 2020
Jun. 01, 2021
Oct. 31, 2017
Schedule of Debt [Line Items]          
Partial prepayment   $ 7,400,000 $ 959,500,000    
Commercial paper          
Schedule of Debt [Line Items]          
Debt instrument, face amount         $ 2,000,000,000.0
Short-term borrowings   0      
2019 Five-Year Term Facility | Unsecured debt          
Schedule of Debt [Line Items]          
Debt instrument, face amount   $ 491,300,000      
2019 Five-Year Term Facility | Unsecured debt | Subsequent event          
Schedule of Debt [Line Items]          
Partial prepayment $ 142,100,000        
2019 Five-Year Term Facility | Unsecured debt | LIBOR          
Schedule of Debt [Line Items]          
LIBOR margin   0.88%      
2019 Five-Year Term Facility | Unsecured debt | LIBOR | Subsequent event          
Schedule of Debt [Line Items]          
LIBOR margin       0.63%