Aggregate dividends declared during the period for each share of common stock outstanding.

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-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
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Date the declared dividend will be paid, in CCYY-MM-DD format.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
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The month and year (YYYY-MM) that the dividend to be paid was declared.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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DIVIDENDS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands				1 Months Ended				9 Months Ended
	Sep. 12, 2018	Jun. 13, 2018	Mar. 14, 2018	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Feb. 28, 2018	Sep. 30, 2018	Sep. 30, 2017
Dividends per Share [Abstract]
Payment of cash dividends								$ 60,395	$ 57,065
Dividend Declared 2018-Q1 [Member]
Dividends per Share [Abstract]
Dividend payable, date declared								2018-02
Dividend payable per share (in dollars per share)							$ 0.365
Payment of cash dividends			$ 19,800
Dividend payable, date to be paid								Mar. 14, 2018
Dividend payable, date of record								Feb. 26, 2018
Dividend Declared 2018-Q2 [Member]
Dividends per Share [Abstract]
Dividend payable, date declared								2018-04
Dividend payable per share (in dollars per share)						$ 0.365
Payment of cash dividends		$ 20,300
Dividend payable, date to be paid								Jun. 13, 2018
Dividend payable, date of record								May 25, 2018
Dividend Declared 2018-Q3 [Member]
Dividends per Share [Abstract]
Dividend payable, date declared								2018-07
Dividend payable per share (in dollars per share)					$ 0.365
Payment of cash dividends	$ 20,300
Dividend payable, date to be paid								Sep. 12, 2018
Dividend payable, date of record								Aug. 31, 2018
Dividend Declared 2018-Q4 [Member] \| Subsequent Event [Member]
Dividends per Share [Abstract]
Dividend payable, date declared				2018-10
Dividend payable per share (in dollars per share)				$ 0.365
Dividend payable, date to be paid				Dec. 12, 2018
Dividend payable, date of record				Nov. 30, 2018