Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income (loss)	$ (1,474.6)	$ 312.1
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	110.8	98.7
Stock-based compensation	8.3	7.1
Change in fair value of catalyst obligations	(11.7)	3.1
Deferred income taxes	14.2	(7.2)
Non-cash change in inventory repurchase obligations	(67.9)	14.2
Non-cash lower of cost or market inventory adjustment	1,285.6	(506.0)
Change in fair value of contingent consideration	(53.0)	0.0
Debt extinguishment costs	22.2	0.0
Pension and other post-retirement benefit costs	13.1	11.2
Income from equity method investee	0.0	4.7
Distributions from equity method investee	0.0	4.7
Changes in operating assets and liabilities:
Accounts receivable	394.7	(152.7)
Due to/from affiliates	32.0	10.3
Inventories	74.3	(194.7)
Prepaid and other current assets	(44.8)	(70.0)
Accounts payable	(198.7)	40.6
Accrued expenses	(367.0)	213.3
Deferred revenue	16.9	46.5
Other assets and liabilities	(9.0)	(11.5)
Net cash used in operating activities	(254.6)	(185.0)
Cash flows from investing activities:
Expenditures for property, plant and equipment	(59.2)	(94.2)
Expenditures for deferred turnaround costs	(69.1)	(133.0)
Expenditures for other assets	(4.6)	(22.2)
Acquisition of Martinez refinery	(1,176.2)	0.0
Equity method investment - return of capital	0.0	1.8
Net cash used in investing activities	(1,309.1)	(247.6)
Cash flows from financing activities:
Distributions to members	(21.1)	(23.0)
Proceeds from 2028 6.00% Senior Notes	1,000.0	0.0
Proceeds from revolver borrowings	1,150.0	575.0
Repayments of revolver borrowings	250.0	325.0
Payments on financing leases	2.6	0.0
Proceeds from insurance premium financing	45.3	30.2
Deferred financing costs and other	12.3	0.0
Net cash provided by financing activities	1,390.0	255.5
Net (decrease) increase in cash and cash equivalents	(173.7)	(177.1)
Cash and cash equivalents, beginning of period	763.1	561.7
Cash and cash equivalents, end of period	589.4	384.6
Non-cash activities:
Accrued and unpaid capital expenditures	125.2	118.1
Assets acquired under operating leases	47.6	936.6
Assets acquired under finance leases	63.5	0.0
Fair value of the Martinez Contingent Consideration at acquisition	77.3	0.0
Distribution of assets to PBF Energy Company LLC	0.0	0.3
Interest (net of capitalized interest of $3.3 million and $4.0 million in 2020 and 2019, respectively)	13.4	4.0
Capitalized interest	3.3	4.0
2023 Senior Notes [Member]
Cash flows from financing activities:
Repayments of Long-term Debt	(517.5)	0.0
Rail Term Loan [Member]
Cash flows from financing activities:
Repayments of Long-term Debt	$ (1.8)	$ (1.7)