Number of shares as consideration for asset purchase agreement.

No definition available.

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Namespace Prefix:	mdrx_
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- Definition

Number of wholly owned subsidiaries in which outstanding equity interest acquired.

+ References

No definition available.

+ Details

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Namespace Prefix:	mdrx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

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- Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Subsequent Events - Additional Information (Detail) $ in Thousands			6 Months Ended
	Aug. 03, 2017 shares	Jul. 17, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Aug. 01, 2017 USD ($) Subsidiary
Subsequent Event [Line Items]
Cash paid for business acquisitions			$ 3,975	$ 905,540
Subsequent Event [Member] \| NantHealth, Inc. [Member]
Subsequent Event [Line Items]
Number of shares as consideration for asset purchase agreement \| shares	15,000,000
Subsequent Event [Member] \| McKesson Corporation [Member]
Subsequent Event [Line Items]
Number of wholly owned subsidiaries in which outstanding equity interest acquired \| Subsidiary					2
Purchase price net of adjustments					$ 185,000
Subsequent Event [Member] \| Netsmart [Member] \| DeVero, Inc. [Member]
Subsequent Event [Line Items]
Cash paid for business acquisitions		$ 51,000