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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Schedule of Assumptions Used to Estimate Weighted-Average Fair Value of Options Granted



	Year Ended December 31
	2011		2010		2009

Dividend yield	5.00	%	5.00	%	5.60	%
Volatility	12.54	%	14.77	%	19.81	%
Risk-free interest rate	2.26	%	2.74	%	2.39	%
Expected life—years	6.3		6.4		6.6

Schedule of Unrecognized Compensation Costs and Amortization Periods



	December 31, 2011		Weighted- Average Service Years
	December 31, 2011		Weighted- Average Service Years
	(Millions of Dollars)
Nonvested stock options	$	10	0.9
Restricted shares and time-vested restricted share units	$	7	1.1
Nonvested performance-based restricted share units	$	41	1.5

Schedule of Stock-Based Compensation Activity



Stock Options	Shares (in thousands)		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term	Aggregate Intrinsic Value (Millions of dollars)

Outstanding at January 1, 2011	25,793		$	61.62
Granted	2,118		64.81
Exercised	(7,496	)	59.16
Forfeited or expired	(3,331	)	67.66
Outstanding at December 31, 2011	17,084		61.92		5.8	$	199
Exercisable at December 31, 2011	11,577		62.68		4.6	$	126

Schedule of Effect of Exercises of Stock Options



	Year Ended December 31
	2011		2010		2009
	(Millions of dollars)
Cash received	$	435	$	131	$	165
Income tax benefit received	13		5		8
Intrinsic value	69		19		30

Schedule of Other Stock-Based Awards Activity



	Time-Vested Restricted Share Units				Performance-Based Restricted Share Units
Other Stock-Based Awards	Shares (in thousands)		Weighted- Average Grant-Date Fair Value		Shares (in thousands)		Weighted- Average Grant-Date Fair Value

Nonvested at January 1, 2011	627		$	61.35	2,170		$	57.71
Granted	130		65.60		1,040		64.93
Vested	(460	)	62.75		(108	)	62.68
Forfeited	(21	)	60.56		(704	)	62.98
Nonvested at December 31, 2011	276		61.07		2,398		59.08

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

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