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Segment and Related Information (Tables)

3 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Schedule of Segment Performance Based on Income (Loss) before Interest Income and Other Income and Expense

Segment revenue and operating income (loss) were as follows during the periods presented:

		Diagnostics				Other				Total
Three months ended September 30, 2017
Revenues		$	178.8			$	11.4			$	190.2
Depreciation and amortization			11.8				1.4				13.2
Segment operating income (loss)			34.0				53.4				87.4
Three months ended September 30, 2016
Revenues		$	165.1			$	12.4			$	177.5
Depreciation and amortization			7.8				1.4				9.2
Segment operating income (loss)			30.1				(24.4	)			5.7

		Three months ended
		September 30,
		2017				2016
Total operating income for reportable segments		$	87.4			$	5.7
Unallocated amounts:
Interest income			0.4				0.3
Interest expense			(0.9	)			(0.7	)
Other			(0.3	)			(1.3	)
Income from operations before income taxes			86.6				4.0
Income tax provision			5.6				5.2
Net income			81.0				(1.2	)
Net loss attributable to non-controlling interest			(0.1	)			—
Net income attributable to Myriad Genetics, Inc.    stockholders		$	81.1			$	(1.2	)

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- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599

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- References

No definition available.

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