Employee Benefit Plans - Narrative (Details)	3 Months Ended	12 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2021 USD ($) hour plan shares	Jun. 30, 2020 USD ($) shares	Jun. 30, 2019 USD ($) shares
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation		$ 25,000
Multiemployer Plans, Estimated Employer Contributions in Next Fiscal Year		$ 3,000,000
Plan assets by category		100.00%	100.00%
Defined contribution plan, hours threshold for eligibility | hour		1,000
Defined contribution plan, employer matching contribution	$ 2,200,000	$ 100,000	$ 1,800,000
Defined benefit plan, discount rate			4.05%
Postretirement benefits curtailment gains and pension settlement (charge)		6,359,000	$ 5,760,000	$ (10,948,000)
Pension settlement		0	0
Multiemployer Plan, Employer Contribution, Cost	$ 5,200,000	2,800,000	4,200,000
Accounts Receivable, Cash Surrender Value		2,400,000
Other Assets, Postretirement Death Benefits		500,000
Postretirement, Non-cash Death Settlement Gain		$ 6,400,000
Multiemployer Plans, Defined Benefit Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Multiemployer plans, number of plans | plan		2
Other Postretirement Benefits Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		$ (14,600,000)
Defined Benefit Plan, Benefit Obligation, Payment for Settlement			$ 167,000	$ 0
Multiemployer plans, number of plans | plan		9
Expected employer contributions in the next fiscal year		$ 51,000
Prior service cost (credit)		(13,400,000)
Pension settlement		$ (5,800,000)
Real estate
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan assets by category		6.00%	6.00%
Farmer Brothers Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan assets by category		100.00%	100.00%
Expected employer contributions in the next fiscal year		$ 1,200,000
Defined benefit plan, discount rate		2.60%	2.55%
Pension settlement		$ 0	$ 0
Farmer Brothers Plan | Real estate
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan assets by category		6.00%	6.00%
Hourly Employees’ Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amount expected to be recognized as a component of net periodic benefit cost in the next fiscal year		$ (84,000)
Plan assets by category		100.00%	100.00%
Defined benefit plan, discount rate		2.60%	2.55%
Pension settlement		$ 0	$ 0
Hourly Employees’ Plan | Real estate
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan assets by category		6.00%	6.00%
Restated and Amended 401K Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined contribution plan, employer matching contribution percent		100.00%
Defined contribution plan, shares contributed | shares		373,697	290,567	90,105
Defined contribution plan, contribution amount		$ 2,400,000	$ 2,900,000	$ 1,600,000
Defined contribution plan, employer matching contribution, percent of eligible income		4.00%