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Variable Interest Entity (Details) - USD ($)
$ in Millions
3 Months Ended
Oct. 29, 2017
Jul. 30, 2017
Feb. 29, 2016
Investments funded $ 64    
Other assets 135 $ 139  
Variable Interest Entity      
Other assets 56 $ 51  
Total Commitment [Member]      
Other Commitment     $ 125
Remaining Commitment [Member]      
Other Commitment $ 61    
Acre Venture Partners [Member]      
LLC ownership percentage 99.80%