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

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

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Subsequent Events (Details) - $ / shares				3 Months Ended		6 Months Ended
Subsequent Events (Details) - $ / shares	Aug. 03, 2020	May 04, 2020	Feb. 24, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Subsequent Event [Line Items]
Dividends declared per common share outstanding (in dollars per share)		$ 0.31	$ 0.31	$ 0.31	$ 0.28	$ 0.62	$ 0.55
Subsequent event
Subsequent Event [Line Items]
Dividends declared per common share outstanding (in dollars per share)	$ 0.31