v3.26.1
Fair Value Measurements - Measured on a Recurring Basis (Details) - USD ($)
$ in Millions
Mar. 28, 2026
Jun. 28, 2025
Assets:    
Short-term investments: $ 554.5 $ 356.4
Total assets 2,654.6 527.6
Cash held in bank 517.7 349.5
Commercial paper    
Assets:    
Short-term investments: 21.6 2.7
Corporate debt securities    
Assets:    
Short-term investments: 303.2 211.1
U.S. Agency securities    
Assets:    
Short-term investments: 126.9 67.7
U.S. Treasury securities    
Assets:    
Short-term investments: 102.8 74.9
Certificates of deposit    
Assets:    
Cash equivalents: 281.5  
Commercial paper    
Assets:    
Cash equivalents:   2.5
Money market funds    
Assets:    
Cash equivalents: 1,818.6 161.7
U.S. Treasury securities    
Assets:    
Cash equivalents:   7.0
Level 1    
Assets:    
Total assets 2,202.9 243.6
Level 1 | Commercial paper    
Assets:    
Short-term investments: 0.0 0.0
Level 1 | Corporate debt securities    
Assets:    
Short-term investments: 0.0 0.0
Level 1 | U.S. Agency securities    
Assets:    
Short-term investments: 0.0 0.0
Level 1 | U.S. Treasury securities    
Assets:    
Short-term investments: 102.8 74.9
Level 1 | Certificates of deposit    
Assets:    
Cash equivalents: 281.5  
Level 1 | Commercial paper    
Assets:    
Cash equivalents:   0.0
Level 1 | Money market funds    
Assets:    
Cash equivalents: 1,818.6 161.7
Level 1 | U.S. Treasury securities    
Assets:    
Cash equivalents:   7.0
Level 2    
Assets:    
Total assets 451.7 284.0
Level 2 | Commercial paper    
Assets:    
Short-term investments: 21.6 2.7
Level 2 | Corporate debt securities    
Assets:    
Short-term investments: 303.2 211.1
Level 2 | U.S. Agency securities    
Assets:    
Short-term investments: 126.9 67.7
Level 2 | U.S. Treasury securities    
Assets:    
Short-term investments: 0.0 0.0
Level 2 | Certificates of deposit    
Assets:    
Cash equivalents: 0.0  
Level 2 | Commercial paper    
Assets:    
Cash equivalents:   2.5
Level 2 | Money market funds    
Assets:    
Cash equivalents: 0.0 0.0
Level 2 | U.S. Treasury securities    
Assets:    
Cash equivalents:   0.0
Level 3    
Assets:    
Total assets 0.0 0.0
Level 3 | Commercial paper    
Assets:    
Short-term investments: 0.0 0.0
Level 3 | Corporate debt securities    
Assets:    
Short-term investments: 0.0 0.0
Level 3 | U.S. Agency securities    
Assets:    
Short-term investments: 0.0 0.0
Level 3 | U.S. Treasury securities    
Assets:    
Short-term investments: 0.0 0.0
Level 3 | Certificates of deposit    
Assets:    
Cash equivalents: 0.0  
Level 3 | Commercial paper    
Assets:    
Cash equivalents:   0.0
Level 3 | Money market funds    
Assets:    
Cash equivalents: $ 0.0 0.0
Level 3 | U.S. Treasury securities    
Assets:    
Cash equivalents:   $ 0.0