Basis of Presentation and Summary of Significant Accounting Policies Research and Development Expense (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Research and Development Expense [Abstract]
Research and Development Costs			Research and Development Costs The Company expenses research and development costs as incurred. Research and development costs amounted to $4 million and $6 million for the three months ended March 31, 2023 and 2022, respectively. Research and development costs amounted to $13 million and $18 million for the nine months ended March 31, 2023 and 2022, respectively.
Research and Development Expense	$ 4	$ 6	$ 13	$ 18

Basis of Presentation and Summary of Significant Accounting Policies Research and Development Expense (Details) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

Mar. 31, 2023

Mar. 31, 2022

Mar. 31, 2023

Mar. 31, 2022

Research and Development Expense [Abstract]

Research and Development Costs

The Company expenses research and development costs as incurred. Research and development costs amounted to $4 million and $6 million for the three months ended March 31, 2023 and 2022, respectively. Research and development costs amounted to $13 million and $18 million for the nine months ended March 31, 2023 and 2022, respectively.

Research and Development Expense

$ 4

$ 6

$ 13

$ 18