Acquisitions and Divestitures (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended			6 Months Ended	12 Months Ended	6 Months Ended		12 Months Ended	6 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2013	Mar. 31, 2014 Enardo LLC and Virgo Valves and Controls, LTD [Domain]	Sep. 30, 2013 Enardo LLC and Virgo Valves and Controls, LTD [Domain]	Mar. 31, 2014 Series of Individually Immaterial Business Acquisitions [Member]	Mar. 31, 2014 Appleton Group [Member]	Sep. 30, 2013 Appleton Group [Member]	Mar. 31, 2014 Embedded Computing and Power [Member]	Dec. 31, 2013 Embedded Computing and Power [Member]	Mar. 31, 2014 Noncontrolling Interest [Member]	Mar. 31, 2014 Parent Company [Member]	Dec. 31, 2013 Common stock purchased related to embedded computing and power transaction [Member]
Significant Acquisitions and Disposals [Line Items]
Percentage of controlling interest sold											51.00%
Proceeds from divestiture of business											$ 268
Equity method investment											60
Gain (loss) on divestiture of business											0
Tax benefit from divestiture											12
Net sales	5,812	5,960	11,418	11,513							146
Assets held-for-sale, other current assets												367
Assets held-for-sale, other assets												212
Liabilities held-for-sale, accrued expenses												251
Pretax foreign cash repatriated												376
After-tax foreign cash repatriated												308
Common stock repurchased during the period	9,405		9,405		8,985										600
Payments to acquire businesses, net of cash acquired			576	0		506		70
Debt assumed in acquisition of businesses						76
Revenues							300			500
Book value of goodwill acquired						316
Expected tax deductible amount of goodwill acquired						0
Identifiable Intangibles Acquired						188
Acquired finite-lived intangible assets, weighted average life						12 years
Percentage of non-controlling interest acquired									44.50%
Payments to acquire businesses, gross									574
Purchase of noncontrolling interest			444										101	343
Increase (decrease) in deferred tax asset	$ 130