Share-Based Awards (Stock Options) (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options granted during period (in shares)	0
Weighted-average Aggregate weighted-average fair value of options (in dollars per share)		$ 13	$ 14
Unrecognized share-based compensation expense	$ 1.0
Unrecognized share-based compensation expense recognition period (in years)	1 year 7 days