Stock and Incentive Programs for Employees and Directors (Tables)

12 Months Ended

Dec. 31, 2017

Stock option awards as of December 31, 2017 and 2016, and changes during the year ended December 31, 2017 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, 2016		1,551		$	37.19		2.2	$	1.7
Cancelled/forfeited/expired		(294	)		58.19
Outstanding at December 31, 2017		1,257			32.28		1.6		—
Vested and exercisable at December 31, 2017		1,257		$	32.28		1.6	$	—

Nonvested restricted stock unit awards as of December 31, 2017 and 2016, and changes during the year ended December 31, 2017 were as follows:

	Shares (thousands)			Weighted Average Grant Date Fair Value
Nonvested at December 31, 2016		833		$	17.23
Granted		720			15.04
Vested		(312	)		14.87
Forfeited		(159	)		17.37
Nonvested at December 31, 2017		1,082		$	16.43

Nonvested performance share unit awards as of December 31, 2017 and 2016, and changes during the year ended December 31, 2017, were as follows:

	Shares (thousands)			Weighted Average Grant Date Fair Value
Nonvested at December 31, 2016		37		$	16.73
Granted		304			16.30
Forfeited		(20	)		16.37
Nonvested at December 31, 2017		321		$	16.34