Condensed Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenues	$ 4,195	$ 4,222	$ 8,355	$ 7,302
Cost of products sold	2,221	2,616	4,408	4,143
Selling and administrative expense	1,089	1,056	2,161	1,829
Research and development expense	252	259	510	451
Acquisitions and other restructurings	101	104	191	458
Other operating expense, net	396	0	61	0
Total Operating Costs and Expenses	4,059	4,036	7,332	6,881
Operating Income	136	186	1,024	422
Interest expense	(171)	(185)	(342)	(343)
Interest income	18	4	6	48
Other income (expense), net	20	1	30	(15)
Income Before Income Taxes	3	6	718	111
Income tax (benefit) provision	(17)	18	98	260
Net Income (Loss)	20	(12)	619	(148)
Preferred stock dividends	(38)	(38)	(76)	(76)
Net (loss) income applicable to common shareholders	$ (18)	$ (50)	$ 544	$ (224)
Basic (Loss) Earnings per Share (USD per share)	$ (0.07)	$ (0.19)	$ 2.02	$ (0.90)
Diluted (Loss) Earnings per Share (USD per share)	(0.07)	(0.19)	1.98	(0.90)
Dividends per Common Share (USD per share)	$ 0.77	$ 0.75	$ 1.54	$ 1.50