v3.24.2.u1
Investments (Tables)
 12 Months Ended
Jun. 30, 2024
Investments, Debt and Equity Securities [Abstract]  
Schedule of Short-term Investments
Short-term investments as of June 30, 2024 consist of the following:
 June 30, 2024
(in millions of U.S. Dollars)Amortized CostGross Unrealized GainsGross Unrealized LossesCredit Loss AllowanceEstimated Fair Value
Corporate bonds$423.5 $0.2 ($6.7)$— $417.0 
U.S. treasury securities553.3 — (0.6)— 552.7 
Municipal bonds102.8 — (2.0)— 100.8 
Certificates of deposit31.5 — — — 31.5 
U.S. agency securities10.0 — — — 10.0 
Commercial paper16.7 — — — 16.7 
Total short-term investments$1,137.8 $0.2 ($9.3)$— $1,128.7 
Short-term investments as of June 25, 2023 consist of the following:
 June 25, 2023
(in millions of U.S. Dollars)Amortized CostGross Unrealized GainsGross Unrealized LossesCredit Loss AllowanceEstimated Fair Value
Corporate bonds$512.3 $— ($16.7)$— $495.6 
Municipal bonds179.7 — (4.4)— 175.3 
Variable rate demand notes27.3 — — — 27.3 
U.S. treasury securities261.8 — (1.4)— 260.4 
U.S. agency securities77.0 — (0.2)— 76.8 
Commercial paper50.2 — — — 50.2 
Certificates of deposit112.3 — — — 112.3 
Total short-term investments1,220.6 — (22.7)— 1,197.9 
Schedule of Gross Unrealized Losses and Fair Value of Short-term Investments by Type and Length of Time
The following table presents the gross unrealized losses and estimated fair value of the Company’s short-term investments, aggregated by investment type and the length of time that individual securities have been in a continuous unrealized loss position:
 June 30, 2024
 Less than 12 MonthsGreater than 12 MonthsTotal
(in millions of U.S. Dollars)Fair ValueUnrealized LossFair ValueUnrealized LossFair ValueUnrealized Loss
Corporate bonds$135.2 ($0.2)$183.4 ($6.5)$318.6 ($6.7)
U.S. treasury securities507.4 (0.4)35.9 (0.2)543.3 (0.6)
Municipal bonds9.0 — 74.3 (2.0)83.3 (2.0)
U.S. agency securities14.9 — 10.0 — 24.9 — 
Total$666.5 ($0.6)$303.6 ($8.7)$970.1 ($9.3)
Number of securities with an unrealized loss141 66 207 
The following table presents the gross unrealized losses and estimated fair value of the Company’s short-term investments, aggregated by investment type and the length of time that individual securities have been in a continuous unrealized loss position:
 June 25, 2023
 Less than 12 MonthsGreater than 12 MonthsTotal
(in millions of U.S. Dollars)Fair ValueUnrealized LossFair ValueUnrealized LossFair ValueUnrealized Loss
Corporate bonds$151.5 ($0.5)$324.1 ($16.2)$475.6 ($16.7)
Municipal bonds61.4 (0.4)105.9 (4.0)167.3 (4.4)
U.S. treasury securities229.3 (0.5)31.1 (0.9)260.4 (1.4)
U.S. agency securities74.8 (0.2)2.0 — 76.8 (0.2)
Commercial paper3.9 — — — 3.9 — 
Total$520.9 ($1.6)$463.1 ($21.1)$984.0 ($22.7)
Number of securities with an unrealized loss95 234 329 
Schedule of Contractual Maturities of Short-term Investments by Type
The contractual maturities of short-term investments at June 30, 2024 were as follows:
(in millions of U.S. Dollars)Within One YearAfter One, Within Five YearsAfter Five, Within Ten YearsAfter Ten YearsTotal
Corporate bonds$262.0 $155.0 $— $— $417.0 
U.S. treasury securities538.0 14.7 — — 552.7 
Municipal bonds43.3 55.1 — 2.4 100.8 
Certificates of deposit31.5 — — — 31.5 
U.S. agency securities10.0 — — — 10.0 
Commercial paper16.7 — — — 16.7 
Total short-term investments$901.5 $224.8 $— $2.4 $1,128.7