Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Operating Activities:
Net income		$ 280	$ 145
Adjustments to arrive at cash provided by operating activities:
Depreciation		51	37
Amortization of intangible assets, pre-production engineering costs and other		95	23
Amortization of acquired contract liability		(30)	0
Stock-based compensation expense		9	6
Compensation and benefits paid in common stock		13	16
Deferred income taxes		(123)	11
Pension plan contributions		(58)	(58)
Changes in assets and liabilities, excluding effects of acquisitions and foreign currency adjustments:
Receivables		(74)	47
Production inventory		(96)	(84)
Pre-production engineering costs		(32)	(38)
Accounts payable		(151)	(49)
Compensation and benefits		(114)	(71)
Advance payments from customers		(30)	(29)
Accrued customer incentives		(50)	11
Product warranty costs		(1)	(3)
Income taxes		91	(16)
Other assets and liabilities		(39)	(49)
Cash (Used for) Operating Activities		(259)	(101)
Investing Activities:
Property additions		(74)	(52)
Acquisition of business, net of cash acquired		0	(11)
Other investing activities		6	0
Cash (Used for) Investing Activities		(68)	(63)
Financing Activities:
Repayment of long-term debt, including current portion		(176)	(300)
Purchases of treasury stock	[1]	(11)	(5)
Cash dividends		(54)	(43)
Increase in short-term commercial paper borrowings, net		398	480
Proceeds from the exercise of stock options		47	15
Other financing activities		(2)	(1)
Cash Provided by Financing Activities		202	146
Effect of exchange rate changes on cash and cash equivalents		5	(14)
Net Change in Cash and Cash Equivalents		(120)	(32)
Cash and Cash Equivalents at Beginning of Period		703	340
Cash and Cash Equivalents at End of Period		$ 583	$ 308

[1] Includes net settlement of employee tax withholding upon vesting of share-based payment awards.