Intangibles and Goodwill - Goodwill Rollforward (Details) $ in Thousands	3 Months Ended
Oct. 31, 2019 USD ($)
Changes in Goodwill
Balance at the beginning of the period	$ 378,109
Acquisitions	276,483
Foreign currency translation	803
Balance at the end of the period	655,395
Medical
Changes in Goodwill
Balance at the beginning of the period	180,197
Acquisitions	0
Foreign currency translation	1,652
Balance at the end of the period	181,849
Life Sciences
Changes in Goodwill
Balance at the beginning of the period	64,481
Acquisitions	0
Foreign currency translation	39
Balance at the end of the period	64,520
Dental
Changes in Goodwill
Balance at the beginning of the period	125,298
Acquisitions	276,483
Foreign currency translation	(888)
Balance at the end of the period	400,893
Dialysis
Changes in Goodwill
Balance at the beginning of the period	8,133
Acquisitions	0
Foreign currency translation	0
Balance at the end of the period	$ 8,133

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Topic 350
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-Paragraph 1
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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