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DEBT - Additional Debt Instruments (Details) - USD ($) $ in Millions |  |  |  |  | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 28, 2024 | Mar. 22, 2024 | Feb. 27, 2024 | Nov. 28, 2023 | Mar. 30, 2024 | Apr. 01, 2023 | Mar. 30, 2024 | Apr. 01, 2023 | Apr. 22, 2024 | Mar. 21, 2024 | Feb. 26, 2024 | Sep. 30, 2023
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium), Net |  |  |  |  | $ 64.0 |  | $ 64.0 |  |  |  |  | $ 56.0
Long Term Debt, Principal Amount, Guaranteed |  |  | $ 200.0 | $ 200.0 |  |  |  |  |  |  |  |
REFINANCING COSTS |  |  |  |  | 28.0 | $ 5.0 | 28.0 | $ 9.0 |  |  |  |
Finance lease obligations |  |  |  |  | 259.0 |  | 259.0 |  |  |  |  | 193.0
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Issuance Costs, Gross |  |  |  |  | 1.0 |  | 1.0 |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 910.0 |  |  |  |  |  |  |  | $ 810.0 |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  |  | 847.0 |  | 847.0 |  |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  |  |  |  |  | 3.0 |  |  |  |  |
Asset-backed Securities |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium), Net |  |  |  |  | 0.0 |  | $ 0.0 |  |  |  |  | 0.0
Debt Instrument, Term |  |  |  |  |  |  | 1 year |  |  |  |  |
Secured Overnight Financing Rate (SOFR) | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  | 2.25% |  |  |  |  |  |  |  | 2.50% |
Tranche J Term Loans |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  | $ 1,000.0 |  |  |  |  |  |  |  |
Original Issue Discount Rate |  |  |  | 0.25% |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium), Net |  |  |  | $ 3.0 |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Principal |  |  |  | $ 3.0 |  |  |  |  |  |  |  |
Debt Issuance Costs, Gross |  |  |  |  | 10.0 |  | $ 10.0 |  |  |  |  |
Tranche J Term Loans | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 3.25% |  |  |  |  |  |  |  |
Senior Secured Notes $1,000M due 2031 7.125% |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  | $ 1,000.0 |  |  |  |  |  |  |  |
Interest rate |  |  |  | 7.125% |  |  |  |  |  |  |  |
Debt Issuance Costs, Gross |  |  |  |  | 10.0 |  | 10.0 |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  | 99.25% |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount |  |  |  | $ 8.0 |  |  |  |  |  |  |  |
Securitization Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Line of Credit |  |  |  |  | 100.0 |  | 100.0 |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | $ 450.0 |  | $ 450.0 |  |  |  |  |
Debt, Weighted Average Interest Rate |  |  |  |  | 6.91% |  | 6.91% |  |  |  |  |
Securitization Facility | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 1.60% |  | 1.60% |  |  |  |  |
Senior Secured Notes $2,200M due 2029 6.375% |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 2,200.0 |  |  |  |  |  |  |  |  |
Interest rate |  |  | 6.375% |  |  |  |  |  |  |  |  |
Debt Issuance Costs, Gross |  |  |  |  | $ 20.0 |  | $ 20.0 |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  | 100.00% |  |  |  |  |  |  |  |  |
Senior Secured Notes $2,200M due 2032 6.625% |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 2,200.0 |  |  |  |  |  |  |  |  |
Interest rate |  |  | 6.625% |  |  |  |  |  |  |  |  |
Debt Issuance Costs, Gross |  |  |  |  | 20.0 |  | 20.0 |  |  |  |  |
Tranche I Term Loans |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 4,525.0 |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Principal |  | $ 11.0 |  |  |  |  |  |  |  |  |  |
Tranche I Term Loans | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  | 2.75% |  |  |  |  |  |  |  | 3.25% |  |
Tranche H Term Loans |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Repurchase Amount |  | $ 1,708.0 |  |  |  |  |  |  |  |  |  |
Tranche K Term Loans |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | 1,708.0 |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium), Net |  | 4.0 |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Principal |  | $ 4.0 |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  | 0.25% |  |  |  |  |  |  |  |  |  |
Tranche K Term Loans | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  | 2.75% |  |  |  |  |  |  |  |  |  |
Tranche I And K Term Loans |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium), Net |  |  |  |  | 2.0 |  | 2.0 |  |  |  |  |
REFINANCING COSTS |  |  |  |  |  |  | 4.0 |  |  |  |  |
Senior Secured Notes $4.4B Due 2026 6.25% |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage | 100.00% |  |  |  |  |  |  |  |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  |  |  |  |  | 21.0 |  |  |  |  |
REFINANCING COSTS |  |  |  |  |  |  | 19.0 |  |  |  |  |
Debt Instrument, Repurchased Face Amount | $ 4,400.0 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Premium. Write-Off |  |  |  |  |  |  | (2.0) |  |  |  |  |
Senior Secured Notes $500M due 2029 6.375% |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 550.0 |  |  |  |  |  |  |  |  |  |
Interest rate |  | 6.375% |  |  |  |  |  |  |  |  |  |
Debt Issuance Costs, Gross |  |  |  |  | $ 5.0 |  | $ 5.0 |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  | 99.75% |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount |  | $ 1.0 |  |  |  |  |  |  |  |  |  |
Senior Subordinated Notes $550M Due 2027 7.50% |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 7.50% |  | 7.50% |  |  |  |  |
Senior Subordinated Notes $550M Due 2027 7.50% | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Repurchased Face Amount |  |  |  |  |  |  |  |  | $ 550.0 |  |  |
Government refundable advances |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium), Net |  |  |  |  | $ 0.0 |  | $ 0.0 |  |  |  |  | 0.0
Government refundable advances |  |  |  |  | 17.0 |  | 17.0 |  |  |  |  | 21.0
Finance Lease Obligations |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium), Net |  |  |  |  | 0.0 |  | 0.0 |  |  |  |  | 0.0
Finance lease obligations |  |  |  |  | 259.0 |  | 259.0 |  |  |  |  | 193.0
Accrued and Other Current Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Accrued interest |  |  |  |  | $ 186.0 |  | $ 186.0 |  |  |  |  | $ 125.0

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- Definition The aggregate expense charged against earnings for refinancing the entity's debt structure, comprising the premium paid to redeem senior subordinated notes, the write off of debt issue costs and unamortized note premium and discount, and costs for settlement of interest rate swap agreement and other expenses. + References No definition available. + Details
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- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-3 + Details
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