Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

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

Summary of Company's Share-Based Compensation Activity and Related Information

A summary of the Company’s share-based compensation activity and related information is as follows:

	2018
	Shares (1)		Weighted Average Exercise Price (2)
Outstanding at beginning of year	4,200		$	82
Granted	360		$	—
Exercised	(772	)	$	70
Forfeited	(138	)	$	94
Outstanding at end of year (3)	3,650		$	85
Exercisable at end of year	2,477		$	82
Shares available for future grants	8,135

(1) Shares include Restricted Stock Units ("RSUs").

(2) The weighted average exercise price excludes RSUs.

(3) The exercise prices for SARs outstanding as of December 31, 2018 ranged from approximately $43 to $100. The weighted average remaining contractual life of all SARs outstanding is approximately five years.

Summary of Company's Nonvested Share Awards (RSUs) Activity

A summary of the Company’s nonvested share awards activity is as follows:

Nonvested Share Awards (RSUs)	Shares		Weighted Average Grant Date Fair Value
Nonvested at January 1, 2018	406		$	91
Granted	360		$	89
Vested	(140	)	$	88
Forfeited	(63	)	$	89
Nonvested at December 31, 2018	563		$	91