Customer Deposits (Details 2) $ in Thousands	Mar. 31, 2019 USD ($)
Time Deposits By Maturity
2019	$ 4,262,000
2020	4,410,000
2021	1,937,000
2022	2,292,000
2023	327,000
After 5 years	85,000
Total	13,313,000
United States [Member]
Time Deposits By Maturity
2019	4,249,000
2020	4,406,000
2021	1,937,000
2022	2,292,000
2023	327,000
After 5 years	85,000
Total	13,296,000
Non United States [Member]
Time Deposits By Maturity
2019	13,000
2020	4,000
2021	0
2022	0
2023	0
After 5 years	0
Total	$ 17,000