NOTES PAYABLE AND OTHER BORROWINGS Narrative Cont. (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended							1 Months Ended		1 Months Ended		1 Months Ended		1 Months Ended		1 Months Ended		1 Months Ended		1 Months Ended		1 Months Ended			1 Months Ended		3 Months Ended	1 Months Ended
	Jul. 31, 2010	Jul. 31, 2009	Apr. 30, 2008	May 31, 2007	Jan. 31, 2006	Jul. 31, 2010 3.875% senior notes due July 2020 [Member]	May 31, 2011 3.875% senior notes due July 2020 [Member]	Jul. 31, 2010 5.375% senior notes due July 2040 [Member]	May 31, 2011 5.375% senior notes due July 2040 [Member]	Jul. 31, 2009 3.75% senior notes due July 2014 [Member]	May 31, 2011 3.75% senior notes due July 2014 [Member]	Jul. 31, 2009 5.00% senior notes due July 2019 [Member]	May 31, 2011 5.00% senior notes due July 2019 [Member]	Jul. 31, 2009 6.125% senior notes due July 2039 [Member]	May 31, 2011 6.125% senior notes due July 2039 [Member]	Apr. 30, 2008 4.95% senior notes due April 2013 [Member]	May 31, 2011 4.95% senior notes due April 2013 [Member]	Apr. 30, 2008 5.75% senior notes due April 2018 [Member]	May 31, 2011 5.75% senior notes due April 2018 [Member]	Apr. 30, 2008 6.50% senior notes due April 2038 [Member]	May 31, 2011 6.50% senior notes due April 2038 [Member]	Jan. 31, 2011 5.00% senior notes due January 2011 [Member]	Jan. 31, 2006 5.25% senior notes due January 2016 [Member]	May 31, 2011 5.25% senior notes due January 2016 [Member]	May 31, 2009 Floating rate senior notes matured in May 2009 [Member]	May 31, 2010 Floating rate senior notes matured in May 2010 [Member]	Feb. 28, 2010 Sun legacy convertible notes [Member]	May 31, 2011 2011 Credit Agreement [Member]
Senior Notes and Other [Line Items]
Total debt issued	$ 3,250	$ 4,500	$ 5,000	$ 2,000	$ 5,750	$ 1,000		$ 2,250		$ 1,500		$ 1,750		$ 1,250		$ 1,250		$ 2,500		$ 1,250			$ 2,000					$ 1,150
Senior notes effective interest yield percentage							3.90%		5.45%		3.75%		5.05%		6.19%		4.96%		5.76%		6.52%			5.32%
Senior notes effective interest yield percentage (fair value hedge)											1.38%
Repayment of borrowings																						$ 2,250			$ 1,000	$ 1,000	$ 700
Additional interest rate for non-performance of registration obligations							0.25%		0.25%