Restructuring, Repositioning, and Efficiency (Details) - 2019 Business Optimization - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	$ 7,842	$ 38,662
Employee Severance
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges		10,200
Professional fees
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges		15,000
Asset impairments
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges		12,200
Employee compensation, incentives and benefits
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	1,182	10,244
Professional fees
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	6,488	15,025
Occupancy
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	(128)	761
Other
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	$ 300	$ 12,632