Equity (Details 1) - 2/7/2017 [Member] shares in Thousands, $ in Millions	5 Months Ended
	May 31, 2017 USD ($) shares
Repurchase Of Shares Of Common Stock [Line Items]
Shares Repurchased | shares	1,072,602	[1]
Dollar Value of Shares Repurchased	$ 39
Remaining Dollar Value of Shares that may be Repurchased	$ 261

[1] Includes 0.2 million shares repurchased for $9 million with trade dates prior to May 31, 2017 but cash settlement dates subsequent to May 31, 2017.