Annual report [Section 13 and 15(d), not S-K Item 405]

Short-term Financing (Narrative) (Details)

v3.25.2
Short-term Financing (Narrative) (Details) - USD ($)
$ in Millions
5 Months Ended 12 Months Ended
Jun. 01, 2025
Apr. 12, 2024
Apr. 11, 2024
May 31, 2025
May 31, 2025
Jan. 31, 2025
Jan. 07, 2025
May 31, 2024
JP Morgan Chase Bank, N.A. [Member] | Interest Rate Swaption [Member]                
Financing [Line Items]                
Aggregate notional amount           $ 3,000.0    
Swaption contract assets, premium paid           $ 19.2    
2019 Credit Facility [Member] | JP Morgan Chase Bank, N.A. [Member]                
Financing [Line Items]                
Maximum borrowing capacity   $ 1,000.0            
Term of unsecured line of credit facility   5 years            
Expiration date   Apr. 12, 2029 Jul. 31, 2024          
2017 Credit Facility [Member] | JP Morgan Chase Bank, N.A. [Member]                
Financing [Line Items]                
Maximum borrowing capacity   $ 750.0            
Term of unsecured line of credit facility   5 years            
Revolving Credit Facility [Member]                
Financing [Line Items]                
Maximum borrowing capacity       $ 2,000.0 $ 2,000.0      
Standby Letters of Credit [Member]                
Financing [Line Items]                
Maximum borrowing capacity       165.0 165.0     $ 168.5
Amounts outstanding       0.0 $ 0.0     $ 0.0
Standby Letters of Credit [Member] | Subsequent Event [Member]                
Financing [Line Items]                
Renewal term 1 year              
Bridge Loan Facility [Member] | JP Morgan Chase Bank, N.A. [Member]                
Financing [Line Items]                
Maximum borrowing capacity             $ 3,500.0  
Debt financing fees, including structuring and commitment fees       $ 14.9        
Minimum [Member] | Revolving Credit Facility [Member]                
Financing [Line Items]                
Commitment fee, percentage         0.05%      
Minimum [Member] | Standby Letters of Credit [Member]                
Financing [Line Items]                
Expiration date         Jun. 01, 2025      
Maximum [Member] | Revolving Credit Facility [Member]                
Financing [Line Items]                
Commitment fee, percentage         0.15%      
Maximum [Member] | Standby Letters of Credit [Member]                
Financing [Line Items]                
Expiration date         Feb. 28, 2027