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Stockholders' Equity - Dividends (Details) - $ / shares								3 Months Ended		9 Months Ended
	Jul. 22, 2020	Apr. 29, 2020	Jan. 22, 2020	Oct. 23, 2019	Jul. 24, 2019	Apr. 24, 2019	Jan. 23, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Dividends Payable [Line Items]
Declared	Jul. 22, 2020	Apr. 29, 2020	Jan. 22, 2020	Oct. 23, 2019	Jul. 24, 2019	Apr. 24, 2019	Jan. 23, 2019
Cash Dividend per Share (in usd per share)	$ 0.20	$ 0.20	$ 0.20	$ 0.19	$ 0.19	$ 0.18	$ 0.18	$ 0.20	$ 0.19	$ 0.60	$ 0.55
Record Date	Aug. 05, 2020	May 13, 2020	Feb. 06, 2020	Nov. 07, 2019	Aug. 08, 2019	May 08, 2019	Feb. 07, 2019
Paid Date	Aug. 19, 2020	May 27, 2020	Feb. 20, 2020	Nov. 21, 2019	Aug. 22, 2019	May 22, 2019	Feb. 21, 2019
Special Dividend
Dividends Payable [Line Items]
Declared				Oct. 23, 2019
Cash Dividend per Share (in usd per share)				$ 0.10
Record Date				Nov. 07, 2019
Paid Date				Nov. 21, 2019

X

- Definition

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

+ References

Reference 1: 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=120397183&loc=d3e187085-122770

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Date the declared dividend will be paid, in CCYY-MM-DD format.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586

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Date the dividend to be paid was declared, in CCYY-MM-DD format.

+ References

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-Topic 230
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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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