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Basis of Presentation and New Accounting Standards - Schedule of Noncash Operating Activities (Details) - USD ($) $ in Millions | 9 Months Ended
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Mar. 30, 2025 | Mar. 31, 2024
Accounting Policies [Abstract] |  |
Decrease in property, plant and equipment from investment tax credit receivables | $ 264.5 | $ 348.0
Decrease in property, plant and equipment from long-term incentive related receivables | 0.0 | 107.3
Proceeds on sale of business received in U.S. corporation common stock | 0.0 | 60.8
Receivables in connection with short-term investment maturities | 0.0 | 15.0
Decrease in property, plant and equipment from insurance receivable | 0.0 | 2.2
Lease asset and liability additions | 35.2 | 1.8
Lease asset and liability modifications, net | 2.9 | 0.9
Lease asset impairment | (4.8) | 0.0
Commitment fee payable for 2030 Senior Notes | $ 15.2 | $ 0.0

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