STATEMENTS OF CONDENSED CONSOLIDATED CASH FLOWS (unaudited) - USD ($) $ in Millions		6 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
CASH FLOWS PROVIDED (USED) BY OPERATING ACTIVITIES FROM CONTINUING OPERATIONS
Net income (loss)		$ (550)	$ 28
Income (loss) from discontinued operations (net of income taxes)		9	(54)
Adjustments to reconcile income from continuing operations to cash flows from operating activities
Depreciation and amortization		122	163
Original issue discount and debt issuance costs amortization		12	4
Deferred income taxes		(28)	2
Stock based compensation expense		8	13
(Income) loss from restricted investments		16	(2)
Excess tax benefit on stock based compensation		1	2
Loss on early retirement of debt		59
Net (income) loss on divestitures			3
Impairments		530	5
Pension contributions		(3)	(3)
Gain on pension and other postretirement plan remeasurements			(18)
Change in operating assets and liabilities	[1]	(163)	(137)
Total cash flows provided by operating activities from continuing operations		13	6
CASH FLOWS PROVIDED (USED) BY INVESTING ACTIVITIES FROM CONTINUING OPERATIONS
Additions to property, plant and equipment		(66)	(70)
Proceeds from disposal of property, plant and equipment			4
Purchase of operations			(1)
Net purchase of funds restricted for specific transactions		(2)	(2)
Reimbursement from restricted investments		19	20
Proceeds from sales of securities		10	156
Purchase of securities		(10)	(156)
Proceeds from the settlement of derivative instruments			2
Payments for the settlement of derivative instruments			(2)
Total cash flows used by investing activities from continuing operations		(49)	(49)
CASH FLOWS PROVIDED (USED) BY FINANCING ACTIVITIES FROM CONTINUING OPERATIONS
Proceeds from issuance of long-term debt		804
Repayment of long-term debt		(767)	(8)
Premium on long-term debt repayment		(59)
Proceeds from (repayment of) short-term debt		306	11
Debt issuance costs		(11)
Cash dividends paid		(33)	(31)
Stock based compensation employee withholding taxes paid in cash		(6)	(8)
Total cash flows provided (used) by financing activities from continuing operations		234	(36)
CASH PROVIDED (USED) BY CONTINUING OPERATIONS		198	(79)
Cash provided (used) by discontinued operations
Operating cash flows		(79)	(41)
Investing cash flows		1	(8)
Total cash used by discontinued operations		(78)	(49)
Effect of currency exchange rate changes on cash and cash equivalents		1	(2)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		121	(130)
CASH AND CASH EQUIVALENTS - BEGINNING OF PERIOD		232	294
CASH AND CASH EQUIVALENTS - END OF PERIOD		$ 353	$ 164

[1] Excludes changes resulting from operations acquired, sold or held for sale.