Cash outflow to owners or shareholders, excluding ordinary dividends. Includes special dividends.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

Name:	us-gaap_PaymentsOfCapitalDistribution
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Shareholders' Equity (Schedule Of Dividends Paid) (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended		6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Dividends, Common Stock [Abstract]
Dividends paid per common share			$ 0.26	$ 0.225	$ 0.52	$ 0.45
Common shares
Dividends, Common Stock [Abstract]
Dividends paid per common share	$ 0.26	$ 0.260
Payment of quarterly dividends	$ 22.8	$ 23.4