Stockholders' Equity (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
Stockholders' Equity
Balance at beginning of period	$ 28,151
Separation of Hewlett Packard Enterprise	(32,572)
Net earnings	592	$ 1,366
Other comprehensive loss, net of taxes	99	206
Comprehensive Income	691	1,572
Issuance of common stock under employee stock plans	(3)
Repurchases of common stock	(800)
Cash dividends declares	(437)
Stock-based compensation expense	61	$ 187
Balance at end of period	(4,909)
Total of retained earnings	37,270
Non-controlling interest	383
Accumulated other comprehensive loss	$ 5,081