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Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Stock-Based Compensation [Abstract]

Summary Of Option And SOSAR Activity Under Incentive Plan

	2013					2012						2011
	Shares		Weighted-Average Exercise Price			Shares		Weighted-Average Exercise Price				Shares		Weighted-Average Exercise Price
Outstanding, beginning of year	1,449		$	274.92		1,486		$	157.07			1,451		$	82.56
Granted	672		$	320.21		617		$	371.70			587		$	268.73
Exercised	(369)		$	176.23		(592)		$	80.31			(536)		$	76.78
Forfeited	(62)		$	329.76		(62)		$	274.25			(16)		$	173.05
Outstanding, end of year	1,690		$	312.44		1,449		$	274.92			1,486		$	157.07

	Shares		Weighted-Average Exercise Price			Weighted-Average Remaining Years of Contractual Life		Aggregate Intrinsic Value
Outstanding as of December 31, 2013	1,690		$	312.44		5.1		$	372,475
Vested and expected to vest as of December 31, 2013	1,647		$	312.04		5.1		$	363,561
Exercisable as of December 31, 2013	258		$	210.85		3.8		$	83,019

Summary Of Non-Vested Stock Award Activity Under Incentive Plan

	2013					2012						2011
	Shares		Grant Date Fair Value			Shares		Grant Date Fair Value				Shares		Grant Date Fair Value
Outstanding, beginning of year	120		$	218.34		207		$	153.40			205		$	148.22
Granted	68		$	527.45		1		$	401.56			6		$	272.28
Vested	(117)		$	215.76		(83)		$	55.92			(3)		$	87.36
Forfeited	—		$	—		(5)		$	267.23			(1)		$	53.36
Outstanding, end of year	71		$	520.27		120		$	218.34			207		$	153.40

Schedule Of Assumptions to Value SOSAR Awards Granted

		2013				2012				2011
Risk-free interest rate			0.5	%			0.4	%			1.6	%
Expected life (years)			3.4				3.4				3.4
Expected dividend yield			0.0	%			0.0	%			0.0	%
Volatility			35.4	%			39.1	%			51.0	%
Weighted-average Black-Scholes fair value per share at date of grant		$	82.51			$	104.97			$	101.91

X

- Definition

Tabular disclosure of the changes in outstanding nonvested shares.

+ 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)(2)

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- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock options and stock appreciation rights that were outstanding at the beginning and end of the year, exercisable at the end of the year, and the number of stock options and stock appreciation rights 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

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- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ 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 (f)(2)

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