Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets:
Total assets		$ 650,377	$ 1,010,689
Liabilities:
Total liabilities		228,145	117,327
Gain on trading securities		30,000
Impairment loss on investment		(30,008)	3,470	$ 7,147	[1],[2]
Repurchase agreements
Assets:
Cash and cash equivalents		446,116	833,658
Money market
Assets:
Cash and cash equivalents		48,227	54,978
Certificates of deposit
Assets:
Cash and cash equivalents		188	27,022
Level 1
Assets:
Total assets		0	22,955
Liabilities:
Total liabilities		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:
Total assets		650,377	987,734
Liabilities:
Total liabilities		228,145	117,327
Level 2 | Repurchase agreements
Assets:
Cash and cash equivalents		446,116	833,658
Level 2 | Money market
Assets:
Cash and cash equivalents		48,227	54,978
Level 2 | Certificates of deposit
Assets:
Cash and cash equivalents		188	27,022
Level 3
Assets:
Total assets		0	0
Liabilities:
Total liabilities		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
Interest rate swaps
Liabilities:
Total liabilities		87,873	56,418
Interest rate swaps | Level 1
Liabilities:
Total liabilities		0	0
Interest rate swaps | Level 2
Liabilities:
Total liabilities		87,873	56,418
Interest rate swaps | Level 3
Liabilities:
Total liabilities		0	0
Trading Securities
Assets:
Cash and cash equivalents			22,955
Trading Securities | Level 1
Assets:
Cash and cash equivalents			22,955
Trading Securities | Level 2
Assets:
Cash and cash equivalents			0
Trading Securities | Level 3
Assets:
Cash and cash equivalents			0
Foreign exchange contracts
Assets:
Foreign exchange contracts		155,846	72,076
Cash collateral obligation for foreign exchange contracts		18,229	6,086
Liabilities:
Total liabilities		140,272	60,909
Cash collateral for foreign exchange contracts		38,569	25,618
Foreign exchange contracts | Level 1
Assets:
Foreign exchange contracts		0	0
Cash collateral obligation for foreign exchange contracts		0	0
Liabilities:
Total liabilities		0	0
Cash collateral for foreign exchange contracts		0	0
Foreign exchange contracts | Level 2
Assets:
Foreign exchange contracts		155,846	72,076
Cash collateral obligation for foreign exchange contracts		0	0
Liabilities:
Total liabilities		140,272	60,909
Cash collateral for foreign exchange contracts		0	0
Foreign exchange contracts | Level 3
Assets:
Foreign exchange contracts		0	0
Cash collateral obligation for foreign exchange contracts		0	0
Liabilities:
Total liabilities		0	0
Cash collateral for foreign exchange contracts		0	$ 0
Telematics
Liabilities:
Impairment loss on investment	$ 15,700
Impairment loss, cumulative amount		136,300
Carrying amount of investments without readily determinable fair value		$ 7,500
Qui
Liabilities:
Impairment loss on investment				$ 7,100

[1] The Company applied the modified retrospective transition method when adopting ASU 2016-02 "Leases", therefore the Company's 2018 prior results were not restated to reflect ASU 2016-02. Refer to footnote 14.

[2] The Company applied the modified retrospective transition method when adopting ASU 2016-02 "Leases", therefore the Company's 2018 prior results were not restated to reflect ASU 2016-02. Refer to footnote 14.