v3.26.1
Fair Value Measurements - Measured on a Recurring Basis (Details) - USD ($)
$ in Millions
Jun. 27, 2026
Jun. 28, 2025
Assets:    
Short-term investments: $ 694.9 $ 356.4
Total assets 2,102.5 527.6
Cash held in bank 635.9 349.5
Commercial paper    
Assets:    
Short-term investments: 54.5 2.7
Asset-backed securities | Recurring basis    
Assets:    
Short-term investments: 0.0  
Corporate debt securities    
Assets:    
Short-term investments: 349.6 211.1
U.S. Agency securities    
Assets:    
Short-term investments: 154.3 67.7
U.S. Treasury securities    
Assets:    
Short-term investments: 136.5 74.9
Certificates of deposit    
Assets:    
Cash equivalents: 131.8  
Commercial paper    
Assets:    
Cash equivalents:   2.5
Commercial paper | Recurring basis    
Assets:    
Cash equivalents: 14.5  
Money market funds    
Assets:    
Cash equivalents: 1,261.3 161.7
U.S. Treasury securities    
Assets:    
Cash equivalents:   7.0
Level 1    
Assets:    
Total assets 1,529.6 243.6
Level 1 | Commercial paper    
Assets:    
Short-term investments: 0.0 0.0
Level 1 | Asset-backed securities | Recurring basis    
Assets:    
Short-term investments:  
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: 136.5 74.9
Level 1 | Certificates of deposit    
Assets:    
Cash equivalents: 131.8  
Level 1 | Commercial paper    
Assets:    
Cash equivalents:   0.0
Level 1 | Commercial paper | Recurring basis    
Assets:    
Cash equivalents: 0.0  
Level 1 | Money market funds    
Assets:    
Cash equivalents: 1,261.3 161.7
Level 1 | U.S. Treasury securities    
Assets:    
Cash equivalents:   7.0
Level 2    
Assets:    
Total assets 572.9 284.0
Level 2 | Commercial paper    
Assets:    
Short-term investments: 54.5 2.7
Level 2 | Asset-backed securities | Recurring basis    
Assets:    
Short-term investments:  
Level 2 | Corporate debt securities    
Assets:    
Short-term investments: 349.6 211.1
Level 2 | U.S. Agency securities    
Assets:    
Short-term investments: 154.3 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 | Commercial paper | Recurring basis    
Assets:    
Cash equivalents: 14.5  
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 | Asset-backed securities | Recurring basis    
Assets:    
Short-term investments:  
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 | Commercial paper | Recurring basis    
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