Number of shares that have been repurchased during the period and are being held in treasury.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_TreasuryStockSharesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

SHARE REPURCHASE PROGRAMS - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Nov. 07, 2018	Feb. 16, 2017
Share Repurchases [Line Items]
Payments for Repurchase of Common Stock	$ 115,933	$ 93,178
Tenth share repurchase plan [Member]
Share Repurchases [Line Items]
Payments for Repurchase of Common Stock	$ 115,900
Treasury Stock Shares Acquired	2,365,451
Maximum \| Tenth share repurchase plan [Member]
Share Repurchases [Line Items]
Authorized amount for repurchase				$ 300,000
Maximum \| Eleventh Share Repurchase Plan [Member]
Share Repurchases [Line Items]
Authorized amount for repurchase			$ 300,000