Employee Incentive, Retirement, and Deferred Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2015

Employee Incentive, Retirement, and Deferred Compensation Plans [Abstract]

Stock-Based Compensation Expense and Related Income Tax Benefit

Year Ended December 31,		2015		2014		2013
Stock option expense	$	46	$	44	$	52
Restricted stock unit expense		83		66		60
Employee stock purchase plan expense		6		5		4
Total stock-based compensation expense	$	135	$	115	$	116
Income tax benefit on stock-based compensation	$	(51)	$	(43)	$	(43)

Stock Option Activity

						Weighted-
			Weighted-			Average
			Average			Remaining		Aggregate
	Number		Exercise Price			Contractual		Intrinsic
	of Options		per Share			Life (in years)		Value
Outstanding at December 31, 2014		41		$	17.74
Granted		6			31.04
Exercised		(6)			15.78
Forfeited		(1)			21.06
Expired		-			16.16
Outstanding at December 31, 2015		40		$	19.82		6.62	$	528
Vested and expected to vest at December 31, 2015		39		$	19.61		6.55	$	519
Vested and exercisable at December 31, 2015		26		$	16.46		5.51	$	425

Information on Stock Options Granted and Exercised

Year Ended December 31,		2015		2014		2013
Weighted-average fair value of options granted per share	$	8.56	$	7.82	$	6.33
Cash received from options exercised		90		189		258
Tax benefit realized on options exercised		22		8		-
Aggregate intrinsic value of options exercised		90		86		82

Assumptions Used to Value Options Granted and Their Expected Lives

Year Ended December 31,	2015		2014		2013
Weighted-average expected dividend yield	1.22	%	1.20	%	1.13	%
Weighted-average expected volatility	28	%	28	%	28	%
Weighted-average risk-free interest rate	2.2	%	2.4	%	2.5	%
Expected life (in years)	4.7 – 7.5		4.4 – 7.2		4.6 – 7.9

Restricted Stock Units Activity

		Weighted-
		Average Grant
	Number	Date Fair Value
	of Units	per Unit
Outstanding at December 31, 2014	10	$	20.66
Granted	3		30.84
Vested	(4)		17.95
Forfeited	(1)		21.25
Outstanding at December 31, 2015	8	$	25.84