Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net income (loss)	$ (638.9)	$ (24.4)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	320.2	289.3
Stock-based compensation	21.4	21.0
Deferred income taxes	(0.5)	(2.7)
Change in fair value of contingent consideration, net	0.0	(3.3)
Pension and other post-retirement benefit costs	26.2	26.0
Gain on insurance recoveries	189.0	0.0
Insurance proceeds	118.0	0.0
(Gain) loss on sale of assets	(0.2)	0.7
Changes in operating assets and liabilities:
Accounts receivable	60.8	(142.5)
Due to/from affiliates	(15.8)	(16.1)
Inventories	(174.6)	318.9
Prepaid and other current assets	(38.1)	(20.1)
Accounts payable	198.4	195.4
Accrued expenses	(122.7)	(204.2)
Deferred revenue	5.8	(43.1)
Other assets and liabilities	(31.4)	(19.5)
Net cash (used in) provided by operating activities	(460.4)	375.4
Cash flows from investing activities:
Expenditures for property, plant, and equipment	(256.5)	(191.4)
Expenditures for deferred turnaround costs	(198.1)	(400.2)
Expenditures for other assets	(39.8)	(24.8)
Insurance proceeds	132.0	0.0
Net cash used in investing activities	(362.4)	(616.4)
Cash flows from financing activities:
Contributions from PBF LLC	110.0	135.0
Distributions to members	(201.1)	(343.6)
Proceeds from revolver borrowings	2,350.0	0.0
Repayments of revolver borrowings	(2,200.0)	0.0
Payments on financing leases	(5.7)	(6.1)
Proceeds from insurance premium financing	100.7	46.1
Payments of insurance premium financing	(56.8)	0.0
Deferred financing costs and other, net	(12.7)	(0.1)
Net cash provided by (used in) financing activities	872.9	(168.7)
Net change in cash and cash equivalents	50.1	(409.7)
Cash and cash equivalents, beginning of period	515.2	1,760.8
Cash and cash equivalents, end of period	565.3	1,351.1
Non-cash activities:
Accrued and unpaid capital expenditures	75.9	68.3
Assets acquired or remeasured under operating and financing leases	79.7	182.9
Distribution of assets to PBF Energy Company LLC	0.0	(8.8)
Cash paid during the period for:
Interest (net of capitalized interest of $11.4 and $9.1 in 2025 and 2024, respectively)	55.4	68.6
Income taxes	0.1	0.4
2030 9.875% Senior Notes
Cash flows from financing activities:
Proceeds from 2030 9.875% Senior Notes	$ 788.5	$ 0.0