Segment Information Revenue From External Customers By Geographic Areas (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Segment Revenue from External Customers by Geographic Area [Line Items]
Revenue	$ 45,457	$ 41,541	$ 89,425	$ 80,606
UNITED STATES
Segment Revenue from External Customers by Geographic Area [Line Items]
Revenue	44,382	40,360	87,223	78,336
Non-US [Member]
Segment Revenue from External Customers by Geographic Area [Line Items]
Revenue	1,078	1,186	2,208	2,279
Operating Segments
Segment Revenue from External Customers by Geographic Area [Line Items]
Revenue	45,460	41,546	89,431	80,615
Corporate
Segment Revenue from External Customers by Geographic Area [Line Items]
Revenue	$ (3)	$ (5)	$ (6)	$ (9)