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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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

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		9 Months Ended
Subsequent Events (Details) - $ / shares	Oct. 25, 2018	Jul. 26, 2018	Oct. 02, 2018	Oct. 03, 2017	Oct. 02, 2018	Oct. 03, 2017
Subsequent Events
Cash dividends declared per common share (in dollars per share)		$ 0.33	$ 0.33	$ 0.29	$ 0.91	$ 0.77
Subsequent Events
Subsequent Events
Cash dividends declared per common share (in dollars per share)	$ 0.33