Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Assets:
Trading securities	$ 20,583	$ 22,955
Total assets	559,673	1,010,689
Liabilities:
Total liabilities	333,525	117,327
Net unrealized losses on equity securities	13,600
Carrying amount of investments without readily determinable fair value	7,400
Interest rate swaps
Liabilities:
Derivative liability	115,355	56,418
Foreign exchange contracts
Assets:
Foreign exchange contracts	136,343	72,076
Cash collateral for foreign exchange derivative contracts	40,212	6,086
Liabilities:
Derivative liability	218,170	60,909
Cash collateral obligation for foreign exchange contracts	130,166	25,618
Repurchase agreements
Assets:
Cash and cash equivalents	334,565	833,658
Money market
Assets:
Cash and cash equivalents	56,056	54,978
Certificates of deposit
Assets:
Cash and cash equivalents	12,126	27,022
Level 1
Assets:
Trading securities	20,583	22,955
Total assets	20,583	22,955
Liabilities:
Total liabilities	0	0
Level 1 | Interest rate swaps
Liabilities:
Derivative liability	0	0
Level 1 | Foreign exchange contracts
Assets:
Foreign exchange contracts	0	0
Cash collateral for foreign exchange derivative contracts	0	0
Liabilities:
Derivative liability	0	0
Cash collateral obligation for foreign exchange contracts	0	0
Level 1 | Repurchase agreements
Assets:
Cash and cash equivalents	0	0
Level 1 | Money market
Assets:
Cash and cash equivalents	0	0
Level 1 | Certificates of deposit
Assets:
Cash and cash equivalents	0	0
Level 2
Assets:
Trading securities	0	0
Total assets	539,090	987,734
Liabilities:
Total liabilities	333,525	117,327
Level 2 | Interest rate swaps
Liabilities:
Derivative liability	115,355	56,418
Level 2 | Foreign exchange contracts
Assets:
Foreign exchange contracts	136,343	72,076
Cash collateral for foreign exchange derivative contracts	0	0
Liabilities:
Derivative liability	218,170	60,909
Cash collateral obligation for foreign exchange contracts	0	0
Level 2 | Repurchase agreements
Assets:
Cash and cash equivalents	334,565	833,658
Level 2 | Money market
Assets:
Cash and cash equivalents	56,056	54,978
Level 2 | Certificates of deposit
Assets:
Cash and cash equivalents	12,126	27,022
Level 3
Assets:
Trading securities	0	0
Total assets	0	0
Liabilities:
Total liabilities	0	0
Level 3 | Interest rate swaps
Liabilities:
Derivative liability		0
Level 3 | Foreign exchange contracts
Assets:
Foreign exchange contracts	0	0
Cash collateral for foreign exchange derivative contracts	0	0
Liabilities:
Derivative liability	0	0
Cash collateral obligation for foreign exchange contracts	0	0
Level 3 | Repurchase agreements
Assets:
Cash and cash equivalents	0	0
Level 3 | Money market
Assets:
Cash and cash equivalents	0	0
Level 3 | Certificates of deposit
Assets:
Cash and cash equivalents	$ 0	$ 0