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Commitment and Contingencies - Additional Information (Detail)	12 Months Ended
	Jun. 30, 2018 USD ($) Lease
Commitments and Contingencies [Line Items]
Claims made against the company | $	$ 0
Myriad RBM [Member]
Commitments and Contingencies [Line Items]
Non-cancelable operating leases	1
Operating leases expiration period	2020
Administrative Functions [Member] | Minimum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2018
Administrative Functions [Member] | Maximum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2024
Information Technology Equipment [Member]
Commitments and Contingencies [Line Items]
Non-cancelable operating leases	3
Operating leases expiration period	2018
Information Technology Equipment [Member] | Maximum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2021
Salt Lake City, Utah [Member]
Commitments and Contingencies [Line Items]
Non-cancelable operating leases	5
Salt Lake City, Utah [Member] | Minimum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2022
Salt Lake City, Utah [Member] | Maximum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2027
Germany [Member]
Commitments and Contingencies [Line Items]
Non-cancelable operating leases	1
Operating leases expiration period	2018
Cancelable operating leases	1
Cancelable operating leases expiration period	2019
South San Francisco, California [Member]
Commitments and Contingencies [Line Items]
Non-cancelable operating leases	1
Operating leases expiration period	2021
Mason, Ohio and Toronto, Canada [Member]
Commitments and Contingencies [Line Items]
Non-cancelable operating leases	3
Mason, Ohio and Toronto, Canada [Member] | Minimum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2018
Mason, Ohio and Toronto, Canada [Member] | Maximum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2024

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+ References

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+ Details

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- Definition

Commitments and contingencies.

+ References

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- Definition

Non-cancelable lease expiration year.

+ References

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- Definition

Number of cancelable operating leases.

+ References

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- Definition

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+ References

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- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

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