Unearned Revenue Details (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($)
Revenue from Contract with Customer [Abstract]
Deferred Revenue, Additions	$ 19.0
Deferred Revenue, Revenue Recognized	$ 15.7

Amount of deferred revenue recognized for transactions arising during the current reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an Entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

No definition available.

Name:	us-gaap_DeferredRevenueAdditions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration