Debt (Tables)

3 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Debt

Our total debt consists of the following:

Debt (in millions)	December 31, 2018		September 30, 2018
Senior Notes and Debentures:
Senior notes due September 2019, 5.625%	$	221	$	550
Senior notes due December 2019, 2.750%	90		252
Senior notes due March 2021, 4.500%	498		497
Senior notes due December 2021, 3.875%	596		596
Senior notes due February 2022, 2.250%	49		102
Senior notes due June 2022, 3.125%	194		194
Senior notes due March 2023, 3.250%	181		181
Senior notes due September 2023, 4.250%	1,240		1,239
Senior notes due April 2024, 3.875%	489		488
Senior notes due October 2026, 3.450%	123		474
Senior debentures due December 2034, 4.850%	86		281
Senior debentures due April 2036, 6.875%	1,068		1,068
Senior debentures due October 2037, 6.750%	75		75
Senior debentures due February 2042, 4.500%	45		62
Senior debentures due March 2043, 4.375%	1,103		1,102
Senior debentures due June 2043, 4.875%	18		32
Senior debentures due September 2043, 5.850%	1,230		1,230
Senior debentures due April 2044, 5.250%	345		345
Junior Debentures:
Junior subordinated debentures due February 2057, 5.875%	642		642
Junior subordinated debentures due February 2057, 6.250%	642		642
Capital lease and other obligations	26		30
Total debt	8,961		10,082
Less current portion	326		567
Noncurrent portion	$	8,635	$	9,515