Restructuring Charges (Number of Positions Eliminated Rollfoward) (Details) - employee	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Restructuring and Related Cost, Number of Positions Eliminated [Roll Forward]
Planned reductions - January 1	82	133
Additional planned reductions	364	87
Actual reductions	(296)	(120)
Planned reductions - September 30	150	100