XML 64 R52.htm IDEA: XBRL DOCUMENT v3.22.4
Investments - Investment Securities, Aggregated by Investment Type and Length of Time (Details)
$ in Millions
Dec. 25, 2022
USD ($)
security
Jun. 26, 2022
USD ($)
security
Fair Value    
Less than 12 Months $ 608.1 $ 650.8
Greater than 12 Months 184.0 9.3
Total 792.1 660.1
Unrealized Loss    
Less than 12 Months (16.4) (22.6)
Greater than 12 Months (10.0) (0.4)
Total $ (26.4) $ (23.0)
Number of securities with an unrealized loss    
Less than 12 Months | security 265 346
Greater than 12 Months | security 90 5
Total | security 355 351
Corporate bonds    
Fair Value    
Less than 12 Months $ 361.0 $ 431.1
Greater than 12 Months 146.4 8.3
Total 507.4 439.4
Unrealized Loss    
Less than 12 Months (12.1) (17.4)
Greater than 12 Months (8.1) (0.4)
Total (20.2) (17.8)
Municipal bonds    
Fair Value    
Less than 12 Months 108.5 150.0
Greater than 12 Months 35.7 1.0
Total 144.2 151.0
Unrealized Loss    
Less than 12 Months (3.2) (4.4)
Greater than 12 Months (1.8) 0.0
Total (5.0) (4.4)
U.S. treasury securities    
Fair Value    
Less than 12 Months 133.6 65.8
Greater than 12 Months 0.0 0.0
Total 133.6 65.8
Unrealized Loss    
Less than 12 Months (1.1) (0.7)
Greater than 12 Months 0.0 0.0
Total (1.1) (0.7)
U.S. agency securities    
Fair Value    
Less than 12 Months 5.0 3.9
Greater than 12 Months 1.9 0.0
Total 6.9 3.9
Unrealized Loss    
Less than 12 Months 0.0 (0.1)
Greater than 12 Months (0.1) 0.0
Total $ (0.1) $ (0.1)