Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets:
Publicly traded equity securities	$ 2,664	$ 2,779
Derivative instruments	212,191	57,707
Total financial assets	691,373	954,616
Liabilities:
Derivative instruments	82,190	35,612
Money market and deposit accounts
Assets:
Cash and cash equivalents	453,349	886,547
Certificates of deposit
Assets:
Cash and cash equivalents	23,169	7,583
Level 1
Assets:
Publicly traded equity securities	2,664	2,779
Derivative instruments	0	0
Total financial assets	456,013	889,326
Liabilities:
Derivative instruments	0	0
Level 1 | Money market and deposit accounts
Assets:
Cash and cash equivalents	453,349	886,547
Level 1 | Certificates of deposit
Assets:
Cash and cash equivalents	0	0
Level 2
Assets:
Publicly traded equity securities	0	0
Derivative instruments	212,191	57,707
Total financial assets	235,360	65,290
Liabilities:
Derivative instruments	82,190	35,612
Level 2 | Money market and deposit accounts
Assets:
Cash and cash equivalents	0	0
Level 2 | Certificates of deposit
Assets:
Cash and cash equivalents	$ 23,169	$ 7,583