Subsequent Events - Additional Information (Details) - USD ($) $ in Millions	Mar. 02, 2022	Apr. 29, 2022
H L P P Divestiture [Member]
Subsequent Event [Line Items]
Sale of business unit	$ 670.0
Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Borrowing Capacity		$ 700.0
Available for the issuance of letters of credit		50.0
Available for swingline loans		25.0
Credit facility borrowed under certain foreign currencies		$ 100.0
Maximum [Member] \| Hospitals and Large Physician Practices Business [Member]
Subsequent Event [Line Items]
Additional cash	$ 30.0

Additional cash

No definition available.

Name:	mdrx_AdditionalCash
Namespace Prefix:	mdrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Available for swingline loans.

+ References

No definition available.

+ Details

Name:	mdrx_AvailableForSwinglineLoans
Namespace Prefix:	mdrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Available for the issuance of letters of credit.

+ References

No definition available.

+ Details

Name:	mdrx_AvailableForTheIssuanceOfLettersOfCredit
Namespace Prefix:	mdrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Credit facility borrowed under certain foreign currencies.

+ References

No definition available.

+ Details

Name:	mdrx_CreditFacilityBorrowedUnderCertainForeignCurrencies
Namespace Prefix:	mdrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ 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
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromDivestitureOfBusinesses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=mdrx_HLPPDivestitureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=mdrx_HospitalsAndLargePhysicianPracticesBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: