v3.26.1
Cash, Cash Equivalents and Investments - Components of Cash, Cash Equivalents and Investments (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
May 31, 2026
Feb. 28, 2026
Cash, Cash Equivalents and Investments [Line Items]    
Cost Basis $ 418.1 $ 426.9
Unrealized Gains 6.7 6.7
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount 0.0  
Unrealized Losses (1.9) (1.2)
Fair Value 422.9 432.4
Cash and cash equivalents (note 2) 256.8 274.7
Short-term Investments 94.1 85.2
Long-term investments (note 2) 57.8 58.3
Restricted Cash and Cash Equivalents 14.2 14.2
Bank balances    
Cash, Cash Equivalents and Investments [Line Items]    
Cost Basis 82.8 168.6
Unrealized Gains 0.0 0.0
Unrealized Losses 0.0 0.0
Fair Value 82.8 168.6
Cash and cash equivalents (note 2) 82.8 168.6
Short-term Investments 0.0 0.0
Long-term investments (note 2) 0.0 0.0
Restricted Cash and Cash Equivalents 0.0 0.0
Bank Balances and Other Investments [Domain]    
Cash, Cash Equivalents and Investments [Line Items]    
Cost Basis 131.6 220.1
Unrealized Gains 6.7 2.4
Unrealized Losses 0.0 (1.2)
Fair Value 138.3 221.3
Cash and cash equivalents (note 2) 82.8 168.6
Short-term Investments 0.0 0.0
Long-term investments (note 2) 55.5 52.7
Restricted Cash and Cash Equivalents 0.0 0.0
Equity securities    
Cash, Cash Equivalents and Investments [Line Items]    
Cost Basis 48.8 [1] 51.5 [2]
Unrealized Gains 6.7 2.4
Unrealized Losses 0.0 (1.2)
Fair Value 55.5 52.7
Cash and cash equivalents (note 2) 0.0 0.0
Short-term Investments 0.0 0.0
Long-term investments (note 2) 55.5 52.7
Restricted Cash and Cash Equivalents 0.0 0.0
Level 2:    
Cash, Cash Equivalents and Investments [Line Items]    
Cost Basis 282.4 205.5
Debt Securities, Available-for-Sale, Unrealized Gain 0.0 0.0
Debt Securities, Available-for-Sale, Unrealized Loss (0.1) 0.0
Fair Value 282.3 205.5
Cash and cash equivalents (note 2) 174.0 106.1
Short-term Investments 94.1 85.2
Long-term investments (note 2) 0.0 0.0
Restricted Cash and Cash Equivalents 14.2 14.2
Level 2: | Term deposits, and certificates of deposits    
Cash, Cash Equivalents and Investments [Line Items]    
Cost Basis 59.8 49.7
Debt Securities, Available-for-Sale, Unrealized Gain 0.0 0.0
Debt Securities, Available-for-Sale, Unrealized Loss 0.0 0.0
Fair Value 59.8 49.7
Cash and cash equivalents (note 2) 50.2 20.1
Short-term Investments 0.0 20.0
Long-term investments (note 2) 0.0 0.0
Restricted Cash and Cash Equivalents 9.6 9.6
Level 2: | Bearer deposit notes    
Cash, Cash Equivalents and Investments [Line Items]    
Cost Basis 50.5 24.9
Debt Securities, Available-for-Sale, Unrealized Gain 0.0 0.0
Debt Securities, Available-for-Sale, Unrealized Loss 0.0 0.0
Fair Value 50.5 24.9
Cash and cash equivalents (note 2) 50.5 11.0
Short-term Investments 0.0 13.9
Long-term investments (note 2) 0.0 0.0
Restricted Cash and Cash Equivalents 0.0 0.0
Level 2: | Commercial paper    
Cash, Cash Equivalents and Investments [Line Items]    
Cost Basis 119.0 93.2
Debt Securities, Available-for-Sale, Unrealized Gain 0.0 0.0
Debt Securities, Available-for-Sale, Unrealized Loss (0.1) 0.0
Fair Value 118.9 93.2
Cash and cash equivalents (note 2) 32.8 37.3
Short-term Investments 81.5 51.3
Long-term investments (note 2) 0.0 0.0
Restricted Cash and Cash Equivalents 4.6 4.6
Level 2: | Non-U.S. promissory notes    
Cash, Cash Equivalents and Investments [Line Items]    
Cost Basis 53.1 24.4
Debt Securities, Available-for-Sale, Unrealized Gain 0.0 0.0
Debt Securities, Available-for-Sale, Unrealized Loss 0.0 0.0
Fair Value 53.1 24.4
Cash and cash equivalents (note 2) 40.5 24.4
Short-term Investments 12.6
Long-term investments (note 2) 0.0 0.0
Restricted Cash and Cash Equivalents 0.0 0.0
Level 2: | Non-U.S. treasury bills    
Cash, Cash Equivalents and Investments [Line Items]    
Cost Basis   13.3
Debt Securities, Available-for-Sale, Unrealized Gain   0.0
Debt Securities, Available-for-Sale, Unrealized Loss   0.0
Fair Value   13.3
Cash and cash equivalents (note 2)   13.3
Short-term Investments   0.0
Long-term investments (note 2)   0.0
Restricted Cash and Cash Equivalents   0.0
Level 3: | Equity securities    
Cash, Cash Equivalents and Investments [Line Items]    
Cost Basis 4.1 1.3
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount 0.0 4.3
Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount (1.8) 0.0
Fair Value 2.3 5.6
Cash and cash equivalents (note 2) 0.0 0.0
Short-term Investments 0.0 0.0
Long-term investments (note 2) 2.3 5.6
Restricted Cash and Cash Equivalents $ 0.0 $ 0.0
[1] Cost basis for investments in privately-held companies includes the effect of returns of capital and impairment.
[2] Cost basis for investments in privately-held companies includes the effect of returns of capital and impairment.