Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

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

Schedule of Activity for Stock Options and Stock Awards

The activity for stock options and stock awards during 2015 was as follows (options and awards in millions):

	Stock options					Stock awards
	Number of options			Weighted average exercise price		Number of awards			Weighted average FMV per award
Outstanding, January 1, 2015		6		$	11.39		4		$	9.97
Granted		1			15.55		1			15.45
Exercised		(1	)		9.54		—			—
Converted		—			—		(1	)		10.12
Other		(1	)		11.49		—			—
Outstanding, December 31, 2015		5			11.99		4			11.41