Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Cash and Cash Equivalents
Restricted Cash and Cash Equivalents, Current	$ 2	$ 4
Accounts Receivable
net allowance for doubtful accounts	$ 3	$ 3
Common Stock
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
shares authorized	100	100
Common Stock, Shares, Issued	100	100
Shares, Outstanding	100	100

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