Debt Instrument, Covenant, Leverage Ration, Maximum

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- Definition

Debt Instrument, Covenant, Maximum Allowable Face Value

+ References

No definition available.

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- Definition

Debt Instrument, Covenant, Minimum Unrestricted Cash, Period Four

+ References

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- Definition

Debt Instrument, Covenant, Minimum Unrestricted Cash, Period One

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- Definition

Debt Instrument, Covenant, Minimum Unrestricted Cash, Period Three

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- Definition

Debt Instrument, Covenant, Minimum Unrestricted Cash, Period Two

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- Definition

Debt Instrument, Discount, Percentage

+ References

No definition available.

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- Definition

Debt Instrument, Floor On Variable Rate

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Floor on Variable Rate Option

+ References

No definition available.

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- Definition

Debt Instrument, Floor On Variable Rate, Option One

+ References

No definition available.

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- Definition

Debt Instrument, Floor On Variable Rate, Option Two

+ References

No definition available.

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- Definition

Debt Instrument, Redemption Price, Accrued And Unpaid Interest, Percentage

+ References

No definition available.

+ Details

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- Definition

Line of Credit Facility, Increase (Decrease) in Maximum Borrowing Capacity

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Line Of Credit Facility, Increase Limit

+ References

No definition available.

+ Details

Name:	baly_LineOfCreditFacilityIncreaseLimit
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility, Increase Limit, Percentage

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility, Maximum Borrowing Capacity, Covenant Percentage Threshold

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility, Maximum Borrowing Capacity, Increase

+ References

No definition available.

+ Details

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

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-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

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- Definition

Net increase or decrease in the carrying amount of the debt instrument for the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
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-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

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- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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+ Details

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

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LONG-TERM DEBT - Additional Information (Details) - USD ($)							12 Months Ended
	Oct. 09, 2020	May 11, 2020	Apr. 24, 2020	Apr. 23, 2020	May 10, 2019	Jul. 10, 2014	Dec. 31, 2020	Mar. 09, 2021	Feb. 04, 2021	Feb. 03, 2021	Mar. 16, 2020	Mar. 31, 2019	Mar. 26, 2019	Mar. 25, 2019
Line of credit \| Senior secured credit facility
Debt Instrument [Line Items]
Interest rate							3.00%
Commitment increase limit					$ 195,000,000
Commitment increase limit, EBITDA					100.00%
Minimum unrestricted cash at April 30, 2020			$ 75,000,000.0
Minimum unrestricted cash at June 30, 2020			65,000,000.0
Minimum unrestricted cash at July 31, 2020			55,000,000.0
Minimum unrestricted cash at March 31, 2021			$ 50,000,000.0
Line of credit \| Senior secured credit facility \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate					1.00%
Floor on variable rate, option two					1.00%
Line of credit \| Senior secured credit facility \| Federal funds effective swap rate
Debt Instrument [Line Items]
Basis spread on variable rate					0.50%
6.75% Senior Notes due 2027 \| 6.75% Senior Notes due 2027
Debt Instrument [Line Items]
Interest rate					6.75%
Principal amount	$ 525,000,000				$ 400,000,000
Additional unsecured senior notes	$ 125,000,000
Maximum capacity on line of credit					30.00%
Maximum leverage ratio					5.50
Redemption price percentage							100.00%
Amount of original principal amount redeemable							40.00%
Amount of notes redeemable plus accrued and unpaid interest							106.75%
6.75% Senior Notes due 2027 \| 6.75% Senior Notes due 2027 \| Subsequent event
Debt Instrument [Line Items]
Increase in fixed dollar prong									$ 975,000,000.0	$ 745,000,000.0
Term Loan Facility \| Line of credit \| Senior secured credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 300,000,000
Quarterly principal payment amounts							$ 750,000
Change in loan facility		$ 275,000,000
Term Loan Facility \| Line of credit \| Senior secured credit facility \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate		8.00%
LIBOR floor		1.00%
Term Loan Facility \| Line of credit \| Credit facility
Debt Instrument [Line Items]
Quarterly principal payment amounts						$ 1,200,000
Principal amount						$ 480,000,000
Discount at issuance						1.00%
Revolving Credit Facility \| Line of credit \| Senior secured credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 250,000,000
Commitment fee					0.50%
Outstanding balance							$ 35,000,000				$ 250,000,000
Full payment		$ 250,000,000
Revolving Credit Facility \| Line of credit \| Senior secured credit facility \| Subsequent event
Debt Instrument [Line Items]
Maximum borrowing capacity								$ 325,000,000
Increase to maximum borrowing capacity								$ 75,000,000
Revolving Credit Facility \| Line of credit \| Senior secured credit facility \| LIBOR
Debt Instrument [Line Items]
Floor on variable rate, option one					0.00%
Basis spread on variable rate			2.75%
Floor on variable rate			0.75%	0.00%
Revolving Credit Facility \| Line of credit \| Credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity						$ 40,000,000						$ 150,000,000	$ 150,000,000	$ 100,000,000
Revolving Credit Facility \| Line of credit \| Credit facility \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate						3.50%
Floor on variable rate						1.00%