Restructuring, Repositioning, and Efficiency (Details) - 2019 Business Optimization $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	$ 39,819
Employee compensation, incentives and benefits
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	10,503
Professional Fees
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	16,014
Occupancy
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	818
Other
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	12,484
Employee Severance
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	10,500
Professional Fees
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	16,000
Asset Impairments
Restructuring Cost and Reserve [Line Items]
Total restructuring and repositioning charges	$ 12,000