Shareholders' Equity Dividends (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended			9 Months Ended
	Jul. 17, 2017	Apr. 17, 2017	Jun. 30, 2017	Mar. 31, 2017	Apr. 01, 2016	Mar. 31, 2017	Apr. 01, 2016
Dividends Payable [Line Items]
Dividends Payable, Date Declared				Feb. 01, 2017
Cash dividends declared per share				$ 0.50	$ 0.50	$ 1.50	$ 1.50
Dividends Payable, Date of Record				Mar. 31, 2017
Dividends, Common Stock, Cash				$ 144		$ 428
Subsequent Event [Member]
Dividends Payable [Line Items]
Dividends Payable, Date Declared			May 03, 2017
Cash dividends declared per share			$ 0.50
Dividends Payable, Date to be Paid	Jul. 17, 2017	Apr. 17, 2017
Dividends Payable, Date of Record			Jun. 30, 2017
Dividends, Common Stock, Cash		$ 145