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Condensed Consolidated Statements of Equity (unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Dividends on common stock (usd per share)	$ 0.565	$ 0.565	$ 0.565	$ 0.535	$ 0.535	$ 0.535

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- Definition

Aggregate dividends paid 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

+ Details

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X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	duration