CONSOLIDATED STATEMENT OF EARNINGS (Parenthetical) In Millions, unless otherwise specified	0 Months Ended
Feb. 28, 2012
CONSOLIDATED STATEMENT OF EARNINGS
Common shares paid as stock dividend (in shares)	9.0

Number of shares of common stock issued as dividends during the period. Excludes stock splits.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Name:	us-gaap_CommonStockDividendsShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration