v2.4.0.6

Stock-Based Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2012

Stock-Based Compensation Plans

Information with respect to stock options granted

				Weighted					Weighted
				average					average
		2009 Plan		exercise price			1994 Plan		exercise price
		shares		per share			shares		per share
Options Outstanding, December 31,2011		247,403		$	98.42		1,112,959		$	94.10
Exercised		(36,953	)	84.74			(281,222	)	67.88
Granted		113,804		132.95			—		—
Forfeited		(2,396	)	99.69			(4,066	)	116.89
Options Outstanding, June 30, 2012		321,858		$	112.19		827,671		$	102.90
Options Exerciseable June 30, 2012		80,930		$	96.66		827,671		$	102.90

X

- Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration