Restructuring Activities - Restructuring Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve
Restructuring expense	$ 130,009	$ 32,353	$ 93,401
Financial Services
Restructuring Cost and Reserve
Restructuring expense	$ 10,900