Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2016

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

Components of share-based compensation expense, net of forfeitures [Table Text Block]

The components of the Company’s share-based compensation expense, net of forfeitures, were as follows:

	December 31,
	2016		2015		2014
	(in millions)
Stock option	$	34	$	39	$	37
Restricted stock	24		22		26
Restricted stock units	76		83		67
Liability awards	4		14		30
Total	$	138	$	158	$	160

Weighted average assumptions used for stock option grants [Table Text Block]

The following weighted average assumptions were used for stock option grants:

	2016		2015		2014
Dividend yield	2.3	%	2.0	%	2.0	%
Expected volatility	27	%	26	%	31	%
Risk-free interest rate	1.3	%	1.2	%	1.5	%
Expected life of stock option (years)	5.0		5.0		5.0

Summary of stock option activity [Table Text Block]

A summary of the Company’s stock option activity for 2016 is presented below (shares and intrinsic value in millions):

	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Outstanding at January 1	7.3		$	81.11	6.7	$	222
Granted	2.0		87.90
Exercised	(0.8	)	55.24
Forfeited	(0.3	)	98.63
Outstanding at December 31	8.2		84.85		6.7	241
Exercisable at December 31	4.8		72.40		5.4	196

Summary of restricted stock award activity [Table Text Block]

A summary of activity for the Company’s restricted stock awards, restricted stock units granted to employees (including advisors), compensation deferrals into stock and deferred share units for 2016 is presented below (shares in millions):

	Shares		Weighted Average Grant-date Fair Value
Non-vested shares at January 1	1.3		$	103.01
Granted	0.9		89.07
Deferred	0.3		96.22
Vested	(1.1	)	94.15
Forfeited	(0.1	)	101.96
Non-vested shares at December 31	1.3		99.37