Income Taxes Income Tax (Details) $ in Millions	3 Months Ended
	Dec. 31, 2022 USD ($)
Income Tax [Line Items]
Unrecognized Tax Benefits, Period Increase (Decrease)	$ 100
Unrecognized Tax Benefits	2,600
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 100