Revenue Recognition (Notes)	Sep. 30, 2019 States
Revenue Recognition and Deferred Revenue [Abstract]
Number of States in which Entity Operates	11

The number of states the entity operates in as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant