Aggregate dividends paid 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=27012166&loc=d3e187085-122770

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- Definition

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

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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No definition available.

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Subsequent Events (Details) - $ / shares			12 Months Ended
Subsequent Events (Details) - $ / shares	Feb. 14, 2020	Jan. 23, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Subsequent events
Dividends declared per common share (in dollars per share)			$ 1.055	$ 0.86	$ 0.80
Subsequent Event
Subsequent events
Dividends paid per common share (in dollars per share)	$ 0.275
Dividends declared per common share (in dollars per share)		$ 0.275