CONSOLIDATED CONDENSED STATEMENT OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares			3 Months Ended	6 Months Ended
Mar. 07, 2018	Dec. 05, 2017	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
CONSOLIDATED CONDENSED STATEMENT OF SHAREHOLDERS' EQUITY
Dividends declared (in dollars per share)	$ 0.70	$ 0.70	$ 0.70	$ 0.70	$ 1.4	$ 1.40

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