Borrowings (Details 2) - USD ($)	1 Months Ended		12 Months Ended
	Oct. 31, 2015	Jan. 31, 2014	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	May. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Mar. 31, 2008	Feb. 28, 2007	Oct. 31, 1999
Long-term debt
Total	$ 21,780,000,000		$ 21,780,000,000	$ 16,039,000,000
Fair value adjustment related to hedged debt	48,000,000		48,000,000	120,000,000
Less: current portion	(2,321,000,000)		(2,321,000,000)	(2,655,000,000)
Interest expense on borrowings recognized in Consolidated Condensed Statements of Earnings
Financing interest			240,000,000	277,000,000	$ 312,000,000
Interest expense			327,000,000	344,000,000	426,000,000
Total interest expense			567,000,000	621,000,000	$ 738,000,000
U.S. Dollar Global Notes
Long-term debt
Total	8,638,000,000		8,638,000,000	17,837,000,000
2006 Shelf Registration Statement-$500 issued at discount to par at a price of 99.694% in February 2007 at 5.4%, due March 2017, paid November 2015
Long-term debt
Total	$ 162,000,000		$ 162,000,000	500,000,000
Discount to par (as a percent)	99.694%		99.694%										99.694%
Interest rate (as a percent)	5.40%		5.40%										5.40%
Face amount of debt instrument	$ 500,000,000		$ 500,000,000										$ 500,000,000
2006 Shelf Registration Statement-$750 issued at discount to par at a price of 99.932% in March 2008 at 5.5%, due March 2018, paid November 2015
Long-term debt
Total	$ 283,000,000		$ 283,000,000	750,000,000
Discount to par (as a percent)	99.932%		99.932%									99.932%
Interest rate (as a percent)	5.50%		5.50%									5.50%
Face amount of debt instrument	$ 750,000,000		$ 750,000,000									$ 750,000,000
2009 Shelf Registration Statement-$1,100 issued at discount to par at a price of 99.887% in September 2010 at 2.125%, paid September 2015
Long-term debt
Total				$ 1,100,000,000
Discount to par (as a percent)				99.887%							99.887%
Interest rate (as a percent)				2.125%							2.125%
Face amount of debt instrument				$ 1,100,000,000							$ 1,100,000,000
2009 Shelf Registration Statement-$650 issued at discount to par at a price of 99.911% in December 2010 at 2.2%, due December 2015, paid November 2015
Long-term debt
Total	$ 309,000,000		$ 309,000,000	650,000,000
Discount to par (as a percent)	99.911%		99.911%							99.911%
Interest rate (as a percent)	2.20%		2.20%							2.20%
Face amount of debt instrument	$ 650,000,000		$ 650,000,000							$ 650,000,000
2009 Shelf Registration Statement-$1,350 issued at discount to par at a price of 99.827% in December 2010 at 3.75%, due December 2020
Long-term debt
Total	$ 648,000,000		$ 648,000,000	1,349,000,000
Discount to par (as a percent)	99.827%		99.827%							99.827%
Interest rate (as a percent)	3.75%		3.75%							3.75%
Face amount of debt instrument	$ 1,350,000,000		$ 1,350,000,000							$ 1,350,000,000
2009 Shelf Registration Statement-$1,000 issued at discount to par at a price of 99.958% in May 2011 at 2.65%, due June 2016, paid November 2015
Long-term debt
Total	$ 346,000,000		$ 346,000,000	1,000,000,000
Discount to par (as a percent)	99.958%		99.958%						99.958%
Interest rate (as a percent)	2.65%		2.65%						2.65%
Face amount of debt instrument	$ 1,000,000,000		$ 1,000,000,000						$ 1,000,000,000
2009 Shelf Registration Statement-$1,250 issued at discount to par at a price of 99.799% in May 2011 at 4.3%, due June 2021
Long-term debt
Total	$ 1,248,000,000		$ 1,248,000,000	1,248,000,000
Discount to par (as a percent)	99.799%		99.799%						99.799%
Interest rate (as a percent)	4.30%		4.30%						4.30%
Face amount of debt instrument	$ 1,250,000,000		$ 1,250,000,000						$ 1,250,000,000
2009 Shelf Registration Statement-$750 issued at discount to par at a price of 99.977% in September 2011 at 2.35%, paid March 2015
Long-term debt
Total				$ 750,000,000
Discount to par (as a percent)				99.977%				99.977%
Interest rate (as a percent)				2.35%				2.35%
Face amount of debt instrument				$ 750,000,000				$ 750,000,000
2009 Shelf Registration Statement-$1,300 issued at discount to par at a price of 99.784% in September 2011 at 3.0%, due September 2016, paid November 2015
Long-term debt
Total	$ 390,000,000		$ 390,000,000	1,298,000,000
Discount to par (as a percent)	99.784%		99.784%					99.784%
Interest rate (as a percent)	3.00%		3.00%					3.00%
Face amount of debt instrument	$ 1,300,000,000		$ 1,300,000,000					$ 1,300,000,000
2009 Shelf Registration Statement-$1,000 issued at discount to par at a price of 99.816% in September 2011 at 4.375%, due September 2021
Long-term debt
Total	$ 999,000,000		$ 999,000,000	999,000,000
Discount to par (as a percent)	99.816%		99.816%					99.816%
Interest rate (as a percent)	4.375%		4.375%					4.375%
Face amount of debt instrument	$ 1,000,000,000		$ 1,000,000,000					$ 1,000,000,000
2009 Shelf Registration Statement-$1,200 issued at discount to par at a price of 99.863% in September 2011 at 6.0%, due September 2041
Long-term debt
Total	$ 1,199,000,000		$ 1,199,000,000	1,199,000,000
Discount to par (as a percent)	99.863%		99.863%					99.863%
Interest rate (as a percent)	6.00%		6.00%					6.00%
Face amount of debt instrument	$ 1,200,000,000		$ 1,200,000,000					$ 1,200,000,000
2009 Shelf Registration Statement-$650 issued at discount to par at a price of 99.946% in December 2011 at 2.625%, paid December 2014
Long-term debt
Total				$ 650,000,000
Discount to par (as a percent)				99.946%			99.946%
Interest rate (as a percent)				2.625%			2.625%
Face amount of debt instrument				$ 650,000,000			$ 650,000,000
2009 Shelf Registration Statement-$850 issued at discount to par at a price of 99.790% in December 2011 at 3.3%, due December 2016, paid November 2015
Long-term debt
Total	$ 220,000,000		$ 220,000,000	849,000,000
Discount to par (as a percent)	99.79%		99.79%				99.79%
Interest rate (as a percent)	3.30%		3.30%				3.30%
Face amount of debt instrument	$ 850,000,000		$ 850,000,000				$ 850,000,000
2009 Shelf Registration Statement-$1,500 issued at discount to par at a price of 99.707% in December 2011 at 4.65%, due December 2021
Long-term debt
Total	$ 1,497,000,000		$ 1,497,000,000	1,496,000,000
Discount to par (as a percent)	99.707%		99.707%				99.707%
Interest rate (as a percent)	4.65%		4.65%				4.65%
Face amount of debt instrument	$ 1,500,000,000		$ 1,500,000,000				$ 1,500,000,000
2009 Shelf Registration Statement-$1,500 issued at discount to par at a price of 99.985% in March 2012 at 2.6%, due September 2017, paid November 2015
Long-term debt
Total	$ 436,000,000		$ 436,000,000	1,500,000,000
Discount to par (as a percent)	99.985%		99.985%			99.985%
Interest rate (as a percent)	2.60%		2.60%			2.60%
Face amount of debt instrument	$ 1,500,000,000		$ 1,500,000,000			$ 1,500,000,000
2009 Shelf Registration Statement-$500 issued at discount to par at a price of 99.771% in March 2012 at 4.05%, due September 2022
Long-term debt
Total	$ 499,000,000		$ 499,000,000	499,000,000
Discount to par (as a percent)	99.771%		99.771%			99.771%
Interest rate (as a percent)	4.05%		4.05%			4.05%
Face amount of debt instrument	$ 500,000,000		$ 500,000,000			$ 500,000,000
2012 Shelf Registration Statement-$750 issued at par in January 2014 at three-month USD LIBOR plus 0.94%, due January 2019
Long-term debt
Total	102,000,000		102,000,000	750,000,000
Face amount of debt instrument	750,000,000	$ 750,000,000	$ 750,000,000
Spread on reference interest rate (as a percent)		0.94%	0.94%
2012 Shelf Registration Statement-$1,250 issued at discount to par at a price of 99.954% in January 2014 at 2.75%, due January 2019
Long-term debt
Total	$ 300,000,000		$ 300,000,000	$ 1,250,000,000
Discount to par (as a percent)		99.954%		99.954%
Interest rate (as a percent)	2.75%	2.75%	2.75%
Face amount of debt instrument	$ 1,250,000,000	$ 1,250,000,000	$ 1,250,000,000
Hewlett Packard Enterprise Senior Notes
Long-term debt
Total	14,583,000,000		14,583,000,000
$2,250 issued at discount to par at a price of 99.944% in October 2015 at 2.4%, due October 2017
Long-term debt
Total	$ 2,249,000,000		$ 2,249,000,000
Discount to par (as a percent)	99.944%		99.944%
Interest rate (as a percent)	2.40%		2.40%
Face amount of debt instrument	$ 2,250,000,000		$ 2,250,000,000
$2,650 issued at discount to par at a price of 99.872% in October 2015 at 2.8%, due October 2018
Long-term debt
Total	$ 2,647,000,000		$ 2,647,000,000
Discount to par (as a percent)	99.872%		99.872%
Interest rate (as a percent)	2.80%		2.80%
Face amount of debt instrument	$ 2,650,000,000		$ 2,650,000,000
$3,000 issued at discount to par at a price of 99.972% in October 2015 at 3.6%, due October 2020
Long-term debt
Total	$ 2,999,000,000		$ 2,999,000,000
Discount to par (as a percent)	99.972%		99.972%
Interest rate (as a percent)	3.60%		3.60%
Face amount of debt instrument	$ 3,000,000,000		$ 3,000,000,000
$1,350 issued at discount to par at a price of 99.802% in October 2015 at 4.4%, due October 2022
Long-term debt
Total	$ 1,347,000,000		$ 1,347,000,000
Discount to par (as a percent)	99.802%		99.802%
Interest rate (as a percent)	4.40%		4.40%
Face amount of debt instrument	$ 1,350,000,000		$ 1,350,000,000
$2,500 issued at discount to par at a price of 99.725% in October 2015 at 4.9%, due October 2025
Long-term debt
Total	$ 2,493,000,000		$ 2,493,000,000
Discount to par (as a percent)	99.725%		99.725%
Interest rate (as a percent)	4.90%		4.90%
Face amount of debt instrument	$ 2,500,000,000		$ 2,500,000,000
$750 issued at discount to par at a price of 99.942% in October 2015 at 6.2%, due October 2035
Long-term debt
Total	$ 749,000,000		$ 749,000,000
Discount to par (as a percent)	99.942%		99.942%
Interest rate (as a percent)	6.20%		6.20%
Face amount of debt instrument	$ 750,000,000		$ 750,000,000
$1,500 issued at discount to par at a price of 99.932% in October 2015 at 6.3%, due October 2045
Long-term debt
Total	$ 1,499,000,000		$ 1,499,000,000
Discount to par (as a percent)	99.932%		99.932%
Interest rate (as a percent)	6.30%		6.30%
Face amount of debt instrument	$ 1,500,000,000		$ 1,500,000,000
$350 issued at par in October 2015 at three-month USD LIBOR plus 1.74%, due October 2017
Long-term debt
Total	350,000,000		350,000,000
Face amount of debt instrument	$ 350,000,000		350,000,000
Spread on reference interest rate (as a percent)	1.74%
$250 issued at par in October 2015 at three-month USD LIBOR plus 1.93%, due October 2018
Long-term debt
Total	$ 250,000,000		250,000,000
Face amount of debt instrument	$ 250,000,000		250,000,000
Spread on reference interest rate (as a percent)	1.93%
EDS Senior Notes-$300 issued October 1999 at 7.45%, due October 2029
Long-term debt
Total	$ 313,000,000		$ 313,000,000	$ 313,000,000
Interest rate (as a percent)	7.45%		7.45%											7.45%
Face amount of debt instrument	$ 300,000,000		$ 300,000,000											$ 300,000,000
Other, including capital lease obligations, at 0.00%-8.30%, due in calendar years 2015-2024
Long-term debt
Other, including capital lease obligations	519,000,000		$ 519,000,000	424,000,000
Minimum interest rate (as a percent)			0.00%
Maximum interest rate (as a percent)			8.30%
Other, including capital lease obligations, at 0.00%-8.30%, due in calendar years 2015-2024 | HP Financial Services
Long-term debt
Other, including capital lease obligations	$ 196,000,000		$ 196,000,000	$ 123,000,000