Stock-Based Compensation

3 Months Ended

Mar. 31, 2018

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

We issue stock-based incentive awards to our eligible employees and Directors under the 2002 Employee Stock Incentive Plan and a Director Deferred Stock Ownership Plan. The 2002 Employee Stock Incentive Plan permits the granting of nonqualified stock options, stock appreciation rights, performance stock, restricted stock and other stock-based awards.

Stock-based compensation for the three months ended March 31 is as follows:



(in millions)	2018		2017
Stock option expense	$	1	$	1
Restricted stock and unit awards expense	12		18
Total stock-based compensation expense	$	13	$	19

Total unrecognized compensation expense related to unvested restricted stock and unit awards as of March 31, 2018 was $53 million, which is expected to be recognized over a weighted average period of 1.5 years.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

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