Debt (Tables)

6 Months Ended

Mar. 31, 2012

Debt Tables [Abstract]

Debt Balances

Debt	March 31,		September 30,
(in millions)	2012		2011
Senior Notes and Debentures:
Senior notes due September 2014, 4.375%	$	598	$	597
Senior notes due February 2015, 1.250%		499		-
Senior notes due September 2015, 4.250%		250		250
Senior notes due April 2016, 6.250%		916		916
Senior notes due December 2016, 2.500%		398		-
Senior notes due April 2017, 3.500%		496		496
Senior notes due October 2017, 6.125%		498		498
Senior notes due September 2019, 5.625%		553		553
Senior notes due March 2021, 4.500%		492		492
Senior notes due December 2021, 3.875%		590		-
Senior debentures due April 2036, 6.875%		1,736		1,736
Senior debentures due October 2037, 6.750%		248		248
Senior debentures due February 2042, 4.500%		245		-
Senior notes due December 2055, 6.850%		-		750
Commercial paper		-		423
Capital lease and other obligations		259		406
Total debt		7,778		7,365
Less current portion		(21)		(23)
Total noncurrent portion	$	7,757	$	7,342