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Share-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2018

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

Assumptions Used to Determine Weighted-Average Fair Value of Options Granted

The weighted average fair value of options granted in 2018, 2017 and 2016 was $8.26, $7.04 and $5.89 per option, respectively, and were determined using the following assumptions:



Years Ended December 31	2018		2017		2016
Expected dividend yield	3.4	%	3.6	%	3.8	%
Risk-free interest rate	2.9	%	2.0	%	1.4	%
Expected volatility	19.1	%	17.8	%	19.6	%
Expected life (years)	6.1		6.1		6.2

Summarized Information Relative to Stock Option Plan Activity

Summarized information relative to stock option plan activity (options in thousands) is as follows:



	Number of Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Outstanding January 1, 2018	36,274		$	46.77
Granted	3,520		58.15
Exercised	(14,598	)	40.51
Forfeited	(1,389	)	53.80
Outstanding December 31, 2018	23,807		$	51.89	5.95	$	584
Exercisable December 31, 2018	16,184		$	48.85	4.82	$	446

Additional Information Pertaining to Stock Option Plans

Additional information pertaining to stock option plans is provided in the table below:



Years Ended December 31	2018		2017		2016
Total intrinsic value of stock options exercised	$	348	$	236	$	444
Fair value of stock options vested	29		30		28
Cash received from the exercise of stock options	591		499		939

Summary of Nonvested RSU and PSU Activity

A summary of nonvested RSU and PSU activity (shares in thousands) is as follows:



	RSUs				PSUs
	Number of Shares		Weighted Average Grant Date Fair Value		Number of Shares		Weighted Average Grant Date Fair Value
Nonvested January 1, 2018	13,609		$	59.32	1,868		$	60.03
Granted	7,270		58.46		1,081		57.17
Vested	(3,766	)	59.66		(758	)	57.59
Forfeited	(985	)	59.30		(152	)	60.06
Nonvested December 31, 2018	16,128		$	58.85	2,039		$	59.42