Financing Receivables and Payables - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivables [Line Items]
Other current liabilities	$ 233,905	$ 238,837
Other Current Assets
Financing Receivables [Line Items]
Other current assets	149,600	156,500
Other Current Liabilities
Financing Receivables [Line Items]
Other current liabilities	$ 92,500	$ 110,000