Basis Of Presentation Restricted Cash Text (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Basis Of Presentation [Abstract]
Cash, Period Increase (Decrease)	$ 0.5	$ 3.8

Amount of increase (decrease) in cash. Cash is the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Includes effect from exchange rate changes.

No definition available.

Name:	us-gaap_CashPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration