Stock and Incentive Programs for Employees and Directors (Tables)

12 Months Ended

Dec. 31, 2015

Stock option awards as of December 31, 2015 and 2014, and changes during the year ended December 31, 2015, were as follows:

	Shares Under Option (thousands)			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value (millions)
Outstanding at December 31, 2014		3,847		$	19.43		4.7	$	12.6
Exercised		(135	)		13.21
Cancelled/forfeited/expired		(5	)		13.23
Outstanding at December 31, 2015		3,707			19.66		3.6		8.4
Vested and expected to vest at December 31, 2015		3,701			19.67		3.6		8.4
Exercisable at December 31, 2015		1,455		$	9.22		4.2	$	8.0

Nonvested restricted stock unit awards as of December 31, 2015 and 2014, and changes during the year ended December 31, 2015 were as follows:

	Shares (thousands)			Weighted Average Grant Date Fair Value
Nonvested at December 31, 2014		2,045		$	12.54
Granted		701			17.14
Vested		(1,010	)		13.71
Forfeited		(66	)		13.55
Nonvested at December 31, 2015		1,670		$	13.72

Nonvested performance share unit awards as of December 31, 2015 and 2014, and changes during the year ended December 31, 2015, were as follows:

	Shares (thousands)			Weighted Average Grant Date Fair Value
Nonvested at December 31, 2014		804		$	11.87
Granted		418			16.73
Expired/forfeited		(5	)		16.73
Vested		(485	)		8.85
Nonvested at December 31, 2015		732		$	16.61