Fair Value (Liabilities Measured on Recurring Basis) (Details) - Redeemable Noncontrolling Interests - Level 3 - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018		Dec. 31, 2017
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning of period	$ (83)	$ (172)	$ (275)		$ (154)
Net income	(10)	(13)	(21)		(23)
Distributions	6	9	19		19
Accretion and other	(19)	(19)	171	[1]	(37)
End of period	$ (106)	$ (195)	$ (106)		$ (195)

[1] As a result of the expiration of a portion of the minority shareholder’s put right, approximately $200 million was reclassified into 21CF investment.