Leases (Summary of Lease Costs and Supplemental Cash Flows Information) (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
		Mar. 31, 2020	Mar. 31, 2020
Lease costs
Total lease costs	[1]	$ 34	$ 95
Supplemental cash flows information
Operating cash flows from operating leases		43	124
ROU assets obtained in exchange for operating lease liabilities	[2]	$ 33	$ 45

[1] Total lease costs of $34 million and $95 million for the three and nine months ended March 31, 2020, respectively, are net of sublease income of approximately $15 million and $40 million, respectively.

[2] Primarily related to leases obtained through the Company’s acquisitions (See Note 2—Acquisitions, Disposals and Other Transactions under the heading “Acquisitions and Disposals”).