Capital Stock (Tables)

6 Months Ended

Jun. 30, 2019

Equity [Abstract]

Schedule of Weighted Average Number of Shares

Shares Used to Calculate Earnings per Share

	Three Months   Ended June 30,		Six Months   Ended June 30,
(In millions)	2019	2018	2019	2018
Weighted-average shares:
Basic(a)	50.2	51.2	50.1	51.0
Effect of dilutive stock awards and options	0.7	—	0.8	—
Diluted	50.9	51.2	50.9	51.0
Antidilutive stock awards and options excluded from denominator	0.1	1.6	0.1	1.7

(a)

We have deferred compensation plans for directors and certain of our employees.  Some amounts owed to participants are denominated in common stock units.  Each unit represents one share of common stock.  The number of shares used to calculate basic earnings per share includes the weighted-average common stock units credited to employees and directors under the deferred compensation plans.  Additionally, nonvested units are also included in the computation of basic weighted-average shares when the requisite service period has been completed. Accordingly, included in basic shares are 0.3 million in the three months and 0.3 million in the six months ended June 30, 2019, and 0.3 million in the three months and 0.3 million in the six months ended June 30, 2018.