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

Borrowings - Senior Notes (Details)

v3.25.1
Borrowings - Senior Notes (Details) - Unsecured debt - USD ($)
 12 Months Ended
Feb. 29, 2024
Feb. 28, 2025
Schedule of Debt [Line Items]    
Percentage of outstanding principal amount as redemption price   100.00%
Basis points above adjusted treasury rate 0.50%  
Senior notes    
Schedule of Debt [Line Items]    
Unsecured debt $ 11,620,100,000 $ 10,682,300,000
4.75% Senior Notes Due November 2024    
Schedule of Debt [Line Items]    
Coupon rate of notes   4.75%
Principal   $ 400,000,000.0
Unsecured debt 399,500,000 $ 0
4.75% Senior Notes Due December 2025    
Schedule of Debt [Line Items]    
Coupon rate of notes   4.75%
Principal   $ 400,000,000.0
Unsecured debt 398,800,000 $ 399,500,000
3.70% Senior Notes Due December 2026    
Schedule of Debt [Line Items]    
Coupon rate of notes   3.70%
Principal   $ 600,000,000.0
Unsecured debt 598,300,000 $ 598,900,000
Basis points above adjusted treasury rate   0.25%
3.50% Senior Notes Due May 2027    
Schedule of Debt [Line Items]    
Coupon rate of notes   3.50%
Principal   $ 500,000,000.0
Unsecured debt 498,200,000 $ 498,800,000
Basis points above adjusted treasury rate   0.20%
4.50% Senior Notes Due May 2047    
Schedule of Debt [Line Items]    
Coupon rate of notes   4.50%
Principal   $ 500,000,000.0
Unsecured debt 493,900,000 $ 494,200,000
Basis points above adjusted treasury rate   0.25%
3.60% Senior Notes Due February 2028    
Schedule of Debt [Line Items]    
Coupon rate of notes   3.60%
Principal   $ 700,000,000.0
Unsecured debt 697,100,000 $ 697,900,000
Basis points above adjusted treasury rate   0.15%
4.10% Senior Notes Due February 2048    
Schedule of Debt [Line Items]    
Coupon rate of notes   4.10%
Principal   $ 600,000,000.0
Unsecured debt 593,200,000 $ 593,400,000
Basis points above adjusted treasury rate   0.20%
4.40% Senior Notes Due November 2025    
Schedule of Debt [Line Items]    
Coupon rate of notes   4.40%
Principal   $ 500,000,000.0
Unsecured debt 498,800,000 $ 499,500,000
Basis points above adjusted treasury rate   0.20%
4.65% Senior Notes Due November 2028    
Schedule of Debt [Line Items]    
Coupon rate of notes   4.65%
Principal   $ 500,000,000.0
Unsecured debt 497,300,000 $ 497,900,000
Basis points above adjusted treasury rate   0.25%
5.25% Senior Notes Due November 2048    
Schedule of Debt [Line Items]    
Coupon rate of notes   5.25%
Principal   $ 500,000,000.0
Unsecured debt 493,800,000 $ 494,100,000
Basis points above adjusted treasury rate   0.30%
3.15% Senior Notes Due August 2029    
Schedule of Debt [Line Items]    
Coupon rate of notes   3.15%
Principal   $ 800,000,000.0
Unsecured debt 796,100,000 $ 796,800,000
Basis points above adjusted treasury rate   0.20%
2.875% Senior Notes Due May 2030    
Schedule of Debt [Line Items]    
Coupon rate of notes   2.875%
Principal   $ 600,000,000.0
Unsecured debt 596,200,000 $ 596,800,000
Basis points above adjusted treasury rate   0.35%
3.75% Senior Notes Due May 2050    
Schedule of Debt [Line Items]    
Coupon rate of notes   3.75%
Principal   $ 600,000,000.0
Unsecured debt 590,600,000 $ 591,000,000.0
Basis points above adjusted treasury rate   0.40%
2.25% Senior Notes Due August 2031    
Schedule of Debt [Line Items]    
Coupon rate of notes   2.25%
Principal   $ 1,000,000,000
Unsecured debt 990,500,000 $ 991,800,000
Basis points above adjusted treasury rate   0.15%
3.60% May 2022 Senior Notes    
Schedule of Debt [Line Items]    
Coupon rate of notes   3.60%
Principal   $ 550,000,000.0
Unsecured debt 549,800,000 $ 0
4.35% May 2022 Senior Notes    
Schedule of Debt [Line Items]    
Coupon rate of notes   4.35%
Principal   $ 600,000,000.0
Unsecured debt 597,800,000 $ 598,400,000
Basis points above adjusted treasury rate   0.25%
4.75% May 2022 Senior Notes    
Schedule of Debt [Line Items]    
Coupon rate of notes   4.75%
Principal   $ 700,000,000.0
Unsecured debt 694,400,000 $ 695,000,000.0
Basis points above adjusted treasury rate   0.30%
5.00% Feb 2023 Senior Notes    
Schedule of Debt [Line Items]    
Coupon rate of notes   5.00%
Principal   $ 500,000,000.0
Unsecured debt 497,900,000 $ 499,000,000.0
4.90% May 2023 Senior Notes    
Schedule of Debt [Line Items]    
Coupon rate of notes   4.90%
Principal   $ 750,000,000.0
Unsecured debt 740,700,000 $ 741,600,000
Basis points above adjusted treasury rate   0.25%
4.80% January 2024 Senior Notes    
Schedule of Debt [Line Items]    
Coupon rate of notes   4.80%
Principal   $ 400,000,000.0
Unsecured debt $ 397,200,000 $ 397,700,000
Basis points above adjusted treasury rate   0.15%