Share-Based Compensation (Narrative) (Details) - PSU	12 Months Ended
	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance measurement period for PSUs	3 years
Revenue, weighting (percent)	37.50%
Earnings per share, weighting (percent)	37.50%
Shareholder, weighting (percent)	25.00%
Restricted trading period upon vesting for PSU's	1 year 1 day
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares issued	0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares issued	200.00%