STOCK-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement, Noncash Expense [Abstract]

Stock-Based Compensation Cost and Associated Tax Benefit

Presented below is a summary of the stock-based compensation cost and associated tax benefit included in the accompanying consolidated statements of operations:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Stock-based compensation cost	$	38	$	33	$	110	$	103
Tax benefit	$	8	$	7	$	22	$	22

Weighted Average Assumptions used in Determining Fair Value for Options Granted

The following weighted average assumptions were used in determining the fair value for options granted in 2020:

Expected dividend yield	0.80 %
Expected stock volatility	22.52 %
Risk-free interest rate	1.43 %
Expected holding period	5.7 years

Stock Option Exercises and Restricted Stock Vesting

The following tables summarize information relating to stock option exercises and restricted stock vesting:

	Nine Months Ended September 30,
	2020		2019
Exercise of stock options:
Proceeds from stock option exercises	$	32	$	29
Aggregate intrinsic value	$	102	$	99
Tax benefit realized upon exercise	$	24	$	24
Number of shares exercised	0.5		0.7
Vesting of restricted stock:
Fair value of shares vested	$	195	$	153
Tax benefit realized upon vesting	$	45	$	36
Number of shares vested	0.8		0.8
Vesting of performance-based restricted stock:
Fair value of shares vested	$	70	$	48
Tax benefit realized upon vesting	$	17	$	12
Number of shares vested	0.3		0.3