Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Option and SAR Activity [Table Text Block]

Stock option and SAR activity for the year ended December 31, 2015 is summarized in the table below:

	Shares		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life	Aggregate Intrinsic Value
	(in millions)				(in years)	(in millions)
Outstanding at beginning of period	33		$	53
Granted	9		110
Exercised	(7	)	53
Forfeited	(1	)	80
Outstanding at end of period	34		68		6.0	$	1,666
Exercisable at end of period	16		47		3.4	1,133
Vested and expected to vest, end of period	33		67		5.9	1,646

Restricted Share Activity [Table Text Block]

Restricted share activity for the year ended December 31, 2015 is summarized in the table below:

(shares in millions)	Shares		Weighted-Average Grant Date Fair Value per Share
Nonvested at beginning of period	9		$	61
Granted	3		110
Vested	(5	)	62
Nonvested at end of period	7		82

Other Share-Based Compensation Data [Table Text Block]

Other Share-Based Compensation Data

(in millions, except per share amounts)	For the Years Ended December 31,
	2015		2014		2013
Stock Options and SARs
Weighted-average grant date fair value of shares granted, per share	$	22	$	22	$	19
Total intrinsic value of stock options and SARs exercised	482		526		592
Restricted Shares
Weighted-average grant date fair value of shares granted, per share	110		71		58
Total fair value of restricted shares vested	$	460	$	437	$	31
Employee Stock Purchase Plan
Number of shares purchased	2		2		3
Share-Based Compensation Items
Share-based compensation expense, before tax	$	406	$	364	$	331
Share-based compensation expense, net of tax effects	348		314		239
Income tax benefit realized from share-based award exercises	247		231		206

(in millions, except years)	December 31, 2015
Unrecognized compensation expense related to share awards	$	469
Weighted-average years to recognize compensation expense	1.3

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The principal assumptions the Company used in calculating grant-date fair value for stock options and SARs were as follows:

	For the Years Ended December 31,
	2015	2014	2013
Risk-free interest rate	1.6% - 1.7%	1.7% - 1.8%	1.0% - 1.6%
Expected volatility	22.3% - 24.1%	24.1% - 39.6%	41.0% - 43.0%
Expected dividend yield	1.4% - 1.7%	1.6% - 1.9%	1.4% - 1.6%
Forfeiture rate	5.0%	5.0%	5.0%
Expected life in years	5.5 - 6.1	5.4	5.3