Capital Stock (Tables)

12 Months Ended

Dec. 31, 2013

Capital Stock

Schedule of common stock outstanding

(Number of shares in millions)	2013	2012	2011
Common stock:
Balance, beginning of year	102.4	101.0	99.5
Activity under stock plans	1.6	1.4	1.5
Balance, end of year	104.0	102.4	101.0
Treasury stock:
Balance, beginning of year	2.5	2.2	2.2
Issued under stock plans	—	—	(0.5	)
Repurchased	2.6	0.3	0.5
Balance, end of year	5.1	2.5	2.2
Common stock outstanding	98.9	99.9	98.8