Debt Instrument, Certain Refinancing Events, Term

No definition available.

Name:	adt_DebtInstrumentCertainRefinancingEventsTerm
Namespace Prefix:	adt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Quarterly Repayment, Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	adt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Quarterly Repayment Premium, Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	adt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line Of Credit Facility, Covenant, Springing Maturity, Outstanding Balance Threshold Trigger

+ References

No definition available.

+ Details

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Namespace Prefix:	adt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

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+ Details

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Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
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Balance Type:	na
Period Type:	duration

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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

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Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

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Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

+ References

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Period Type:

- Details

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Period Type:

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Period Type:

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Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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DEBT - Narrative (Details) - USD ($) $ in Thousands			1 Months Ended		6 Months Ended
DEBT - Narrative (Details) - USD ($) $ in Thousands	Mar. 08, 2025	Mar. 07, 2025	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2025	Jun. 30, 2024
First Lien Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 600,000
Debt instrument, term		7 years
Line of credit facility, expiration period		91 days
Line of credit facility, covenant, springing maturity, outstanding balance threshold trigger		$ 1,000,000
Debt instrument, quarterly repayment, percentage		0.25%
Debt instrument, quarterly repayment premium, percentage	1.00%
Debt instrument, certain refinancing events, term	6 months
First Lien Term Loan B-2 due 2032 \| Secured Debt
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 550,000		$ 550,000
First Lien Notes due 2026 \| Secured Debt
Debt Instrument [Line Items]
Repayments of senior debt			550,000	$ 506,000
Extinguishment of debt, amount				$ 500,000
Revolving Credit Facility \| First Lien Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Proceeds from lines of credit					133,000	$ 260,000
Repayments of lines of credit					133,000	$ 260,000
Line of credit facility, remaining borrowing capacity			800,000		800,000
Revolving Credit Facility \| 2020 Receivables Facility \| Line of Credit
Debt Instrument [Line Items]
Line of credit facility, remaining borrowing capacity			$ 110,000		$ 110,000