Incentive Based Compensation (Notes)

6 Months Ended

Jun. 30, 2018

Incentive Based Compensation Plans [Abstract]

Incentive Based Compensation [Text Block]

Incentive Based Compensation

Stock options, restricted stock awards and restricted stock units

The following table presents a summary of activity for the first six months of 2018: 

	Stock Options					Restricted Stock Awards & Units
	Number of Shares			Weighted Average Exercise Price		Awards		Weighted Average Grant Date Fair Value
Outstanding at December 31, 2017	10,330,776				$25.52	7,572,845			$14.24
Granted	856,890		(a)		$14.52	4,622,514			$14.57
Options Exercised/Stock Vested	(1,349,984	)			$13.52	(2,757,023	)		$15.87
Canceled	(1,667,972	)			$30.10	(531,203	)		$14.13
Outstanding at June 30, 2018	8,169,710				$25.41	8,907,133			$13.91

^(a)    The weighted average grant date fair value of stock option awards granted was $5.82 per share.

Stock-based performance unit awards

 During the first six months of 2018, we granted 754,140 stock-based performance units to certain officers. The grant date fair value per unit was $17.02.