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Basis of Presentation and New Accounting Standards - Schedule of Noncash Operating Activities (Details) - USD ($) $ in Millions | 6 Months Ended
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Dec. 29, 2024 | Dec. 31, 2023
Accounting Policies [Abstract] |  |
Decrease in property, plant and equipment from investment tax credit receivables | $ 223.3 | $ 211.0
Decrease in property, plant and equipment from long-term incentive related receivables | 0.0 | 104.3
Proceeds on sale of business received in US corporation common stock | 0.0 | 60.8
Receivables in connection with short-term investment maturities | 0.0 | 40.0
Lease asset and liability additions | 25.0 | 1.2
Lease asset and liability modifications, net | 2.6 | 1.9
Lease terminations | 0.0 | (1.4)
Commitment fee payable for 2030 Senior Notes | 29.3 | 0.0
Fees payable in connection with at-the-market program | $ 2.4 | $ 0.0

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