Commitments and Contingencies (Detail)	3 Months Ended
	Mar. 31, 2020 Agreement legal_matter
Loss Contingencies [Line Items]
Approximate number of federal district court actions alleged for patent infringement | legal_matter	25
Guarantee obligations, term	30 years
Number of agreements | Agreement	2
Payment Guarantee
Loss Contingencies [Line Items]
Guarantee obligations, term	18 years