|12 Months Ended|
Dec. 31, 2018
|Product Warranties Disclosures [Abstract]|
The following is a summary of the deferred warranty revenue in the Simulation Division included in total deferred revenue as of December 31, 2018 and 2017:
The following is a summary of the warranty liability in the Power Systems Division that is also included in deferred revenue as of December 31, 2018 and 2017:
The entire disclosure for standard and extended product warranties and other product guarantee contracts, including a tabular reconciliation of the changes in the guarantor's aggregate product warranty liability for the reporting period.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef