NOTES PAYABLE AND OTHER BORROWINGS Narrative Continued (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended		12 Months Ended	1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended		1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended	3 Months Ended	1 Months Ended
	Oct. 31, 2012 1.20% senior notes due October 2017 [Member]	May 31, 2013 1.20% senior notes due October 2017 [Member]	Oct. 31, 2012 2.50% senior notes due October 2022 [Member]	May 31, 2013 2.50% senior notes due October 2022 [Member]	Apr. 30, 2013 4.95% senior notes due April 2013 [Member]	Apr. 30, 2008 4.95% senior notes due April 2013 [Member]	May 31, 2012 4.95% senior notes due April 2013 [Member]	Jul. 31, 2010 3.875% senior notes due July 2020 [Member]	May 31, 2013 3.875% senior notes due July 2020 [Member]	Dec. 16, 2011 3.875% senior notes due July 2020 [Member]	Jul. 31, 2010 5.375% senior notes due July 2040 [Member]	May 31, 2013 5.375% senior notes due July 2040 [Member]	Dec. 16, 2011 5.375% senior notes due July 2040 [Member]	Jan. 31, 2011 5.00% senior notes matured January 2011 [Member]	May 31, 2011 5.00% senior notes matured January 2011 [Member]	Jul. 31, 2009 3.75% senior notes due July 2014 [Member]	May 31, 2013 3.75% senior notes due July 2014 [Member]	Jul. 31, 2009 5.00% senior notes due July 2019 [Member]	May 31, 2013 5.00% senior notes due July 2019 [Member]	Jul. 31, 2009 6.125% senior notes due July 2039 [Member]	May 31, 2013 6.125% senior notes due July 2039 [Member]	Apr. 30, 2008 5.75% senior notes due April 2018 [Member]	May 31, 2013 5.75% senior notes due April 2018 [Member]	Apr. 30, 2008 6.50% senior notes due April 2038 [Member]	May 31, 2013 6.50% senior notes due April 2038 [Member]	Jan. 31, 2006 5.25% senior notes due January 2016 [Member]	May 31, 2013 5.25% senior notes due January 2016 [Member]	Feb. 28, 2012 RightNow legacy convertible notes [Member]	Oct. 31, 2012 Senior Notes [Member]	Jul. 31, 2010 Senior Notes [Member]	Jul. 31, 2009 Senior Notes [Member]	Apr. 30, 2008 Senior Notes [Member]	Jan. 31, 2006 Senior Notes [Member]
Senior Notes and Other [Line Items]
Total debt issued	$ 2,500		$ 2,500			$ 1,250		$ 1,000			$ 2,250					$ 1,500		$ 1,750		$ 1,250		$ 2,500		$ 1,250		$ 2,000			$ 5,000	$ 3,250	$ 4,500	$ 5,000	$ 5,750
Senior notes issuance date																													Oct. 25, 2012	Jul. 12, 2010	Jul. 08, 2009	Apr. 09, 2008	Jan. 13, 2006
Repayment of borrowings					1,250									2,250
Aggregate principal amount tendered and exchanged under the completed registered offer to exchange										994			2,240
Stated interest rate percentage		1.20%		2.50%			4.95%		3.875%			5.375%			5.00%		3.75%		5.00%		6.125%		5.75%		6.50%		5.25%
Maturity date		Oct. 15, 2017		Oct. 15, 2022			Apr. 15, 2013		Jul. 15, 2020			Jul. 15, 2040					Jul. 08, 2014		Jul. 08, 2019		Jul. 08, 2039		Apr. 15, 2018		Apr. 15, 2038		Jan. 15, 2016
Senior notes effective interest yield percentage		1.24%		2.51%					3.93%			5.45%					3.75%		5.05%		6.19%		5.76%		6.52%		5.32%
Senior notes effective interest yield percentage (fair value hedge)																	1.34%
Repayments of assumed legacy convertible notes																												$ 225