Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents (PBFX: $32.4 and $36.3, respectively)	$ 1,479.7	$ 1,609.5
Accounts receivable	1,007.8	512.9
Inventories	2,636.2	1,686.2
Prepaid and other current assets	142.8	58.8
Total current assets	5,266.5	3,867.4
Property, plant and equipment, net (PBFX: $807.2 and $820.2, respectively)	4,834.8	4,843.3
Lease right of use assets	741.2	916.9
Deferred charges and other assets, net	811.7	872.2
Total assets	11,654.2	10,499.8
Current liabilities:
Accounts payable	783.3	407.0
Accrued expenses	2,869.0	1,911.5
Deferred revenue	28.8	47.2
Current operating lease liabilities	66.2	78.4
Current debt	3.7	7.4
Total current liabilities	3,751.0	2,451.5
Long-term debt (PBFX: $681.7 and $720.8, respectively)	4,624.4	4,653.6
Deferred tax liabilities	96.1	99.6
Long-term operating lease liabilities	600.5	756.0
Long-term financing lease liabilities	63.7	68.3
Other long-term liabilities	271.6	268.5
Total liabilities	9,407.3	8,297.5
Commitments and contingencies (Note 9)
Preferred stock, $0.001 par value, 100,000,000 shares authorized, no shares outstanding at June 30, 2021 and December 31, 2020	0.0	0.0
Treasury stock, at cost	(168.5)	(167.3)
Additional paid in capital	2,862.5	2,846.2
Retained earnings (Accumulated deficit)	(1,020.5)	(1,027.1)
Accumulated other comprehensive loss	(9.2)	(9.1)
Total PBF Energy Inc. equity	1,664.4	1,642.8
Noncontrolling interest	582.5	559.5
Total equity	2,246.9	2,202.3
Liabilities and Equity, Total	11,654.2	10,499.8
Class A Common Stock [Member]
Current liabilities:
Common stock, value, issued	0.1	0.1
Class B common stock [Member]
Current liabilities:
Common stock, value, issued	0.0	0.0
PBF LLC [Member]
Current assets:
Cash and cash equivalents (PBFX: $32.4 and $36.3, respectively)	1,477.4	1,607.3
Accounts receivable	1,007.8	512.9
Inventories	2,636.2	1,686.2
Prepaid and other current assets	142.8	58.8
Total current assets	5,264.2	3,865.2
Property, plant and equipment, net (PBFX: $807.2 and $820.2, respectively)	4,834.8	4,843.3
Lease right of use assets	741.2	916.9
Deferred charges and other assets, net	811.8	872.3
Total assets	11,652.0	10,497.7
Current liabilities:
Accounts payable	783.3	406.9
Accrued expenses	2,915.1	1,951.2
Deferred revenue	28.8	47.2
Current operating lease liabilities	66.2	78.4
Current debt	3.7	7.4
Total current liabilities	3,797.1	2,491.1
Long-term debt (PBFX: $681.7 and $720.8, respectively)	4,624.4	4,653.6
Affiliate note payable	375.3	376.3
Deferred tax liabilities	24.9	38.7
Long-term operating lease liabilities	600.5	756.0
Long-term financing lease liabilities	63.7	68.3
Other long-term liabilities	271.6	268.5
Total liabilities	9,757.5	8,652.5
Treasury stock, at cost	(168.5)	(167.3)
Retained earnings (Accumulated deficit)	(676.7)	(690.5)
Accumulated other comprehensive loss	(6.2)	(6.1)
Total PBF Energy Inc. equity	1,400.1	1,374.0
Noncontrolling interest	489.3	466.1
Total equity	1,889.4	1,840.1
Liabilities and Equity, Total	11,652.0	10,497.7
PBF LLC [Member] | Series B Units [Member]
Current liabilities:
Series B Units, 1,000,000 issued and outstanding, no par or stated value	5.1	5.1
PBF LLC [Member] | Series A Units [Member]
Current liabilities:
Common unit, issuance value	17.8	17.6
PBF LLC [Member] | Series C Units [Member]
Current liabilities:
Common unit, issuance value	$ 2,233.7	$ 2,220.3