Segment Information Revenue From External Customers By Geographic Areas (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Segment Revenue from External Customers by Geographic Area [Line Items]
Revenue	$ 55,264	$ 57,442	$ 107,541	$ 112,092
UNITED STATES
Segment Revenue from External Customers by Geographic Area [Line Items]
Revenue	54,858	57,049	106,749	111,319
Non-US [Member]
Segment Revenue from External Customers by Geographic Area [Line Items]
Revenue	428	415	836	816
Operating Segments
Segment Revenue from External Customers by Geographic Area [Line Items]
Revenue	55,286	57,464	107,585	112,135
Corporate
Segment Revenue from External Customers by Geographic Area [Line Items]
Revenue	$ (22)	$ (22)	$ (44)	$ (43)