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Equity - Schedule of Dividends Declared (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands			1 Months Ended	3 Months Ended		6 Months Ended		9 Months Ended
	Jul. 02, 2019	Mar. 11, 2019	Aug. 31, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Feb. 27, 2019
Subsequent Event [Line Items]
Dividends, Common Stock				$ 26,368	$ 26,875	$ 30,652	$ 53,715
Stock Repurchased and Retired During Period, Shares				21,000		24,000
Cash dividends declared per common share (in dollars per share)		$ 0.035		$ 0.035		$ 0.07
Stock Repurchase Program, Authorized Amount									$ 150,000
Stock Issued During Period, Shares, Dividend Reinvestment Plan								7,000
Stock Repurchased and Retired During Period, Value				$ 128,014	$ 0	$ 149,868	$ 0
Subsequent Event [Member]
Subsequent Event [Line Items]
Cash dividends declared per common share (in dollars per share)			$ 0.035
Stock Issued During Period, Shares, Dividend Reinvestment Plan	4,000
Dividend Declared [Member]
Subsequent Event [Line Items]
Dividends, Common Stock				$ 26,000		$ 53,000
Dividend Settled in Cash [Member]
Subsequent Event [Line Items]
Dividends, Common Stock								$ 7,000
Dividend Settled in Cash [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends, Common Stock	$ 3,000
Dividend Settled in Stock [Member]
Subsequent Event [Line Items]
Dividends, Common Stock								$ 46,000
Dividend Settled in Stock [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends, Common Stock	$ 23,000

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

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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