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Segment and Related Information (Tables)

9 Months Ended

Mar. 31, 2019

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 March 31, 2019
Revenues		$	200.5			$	16.1			$	216.6
Depreciation and amortization			17.0				1.3				18.3
Segment operating income (loss)			40.6				(34.7	)			5.9
Three months ended March 31, 2018
Revenues		$	169.3			$	13.8			$	183.1
Depreciation and amortization			11.7				1.2				12.9
Segment operating income			34.7				(20.9	)			13.8
Nine months ended March 31, 2019
Revenues		$	592.5			$	43.2			$	635.7
Depreciation and amortization			50.7				3.9				54.6
Segment operating income			96.6				(83.4	)			13.2
Nine months ended March 31, 2018
Revenues		$	509.7			$	40.1			$	549.8
Depreciation and amortization			35.4				3.9				39.3
Segment operating income (loss)			101.8				2.5				104.3

		Three months ended								Nine months ended
		March 31,								March 31,
		2019				2018				2019				2018
Total operating income for reportable segments		$	5.9			$	13.8			$	13.2			$	104.3
Unallocated amounts:
Interest income			0.7				0.5				2.3				1.2
Interest expense			(3.2	)			(0.5	)			(8.8	)			(2.2	)
Other			(0.1	)			(0.5	)			1.0				(1.3	)
Income from operations before income taxes			3.3				13.3				7.7				102.0
Income tax provision			(3.6	)			4.3				(1.0	)			(16.7	)
Net income (loss)			6.9				9.0				8.7				118.7
Net loss attributable to non-controlling interest			—				(0.1	)			(0.1	)			(0.2	)
Net income (loss) attributable to Myriad Genetics, Inc.    stockholders		$	6.9			$	9.1			$	8.8			$	118.9

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8906-108599

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