Discontinued Operations Discontinued Operations - Assets and Liabilities Held for Sale, Specific Transactions (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014
Assets and Liabilities Held for Sale, Specific Transactions [Line Items]
Cash and cash equivalents	$ 19	$ 20
Accounts receivable - net	1,265	1,319
Inventories	220	218
Other current assets	234	231
Property, plant and equipment - net	593	530
Goodwill	266	265
Other intangible assets - net	38	39
Investments in partially-owned affiliates	71	83
Other noncurrent assets	90	82
Assets held for sale	2,796	2,787
Short-term debt	6	3
Accounts payable	1,169	1,246
Accrued compensation and benefits	118	152
Other current liabilities	413	400
Liabilities held for sale	1,706	1,801
Interiors
Assets and Liabilities Held for Sale, Specific Transactions [Line Items]
Cash and cash equivalents	0	0
Accounts receivable - net	509	596
Inventories	214	209
Other current assets	177	174
Property, plant and equipment - net	555	496
Goodwill	21	12
Other intangible assets - net	4	4
Investments in partially-owned affiliates	71	83
Other noncurrent assets	33	35
Assets held for sale	1,584	1,609
Short-term debt	0	0
Accounts payable	555	655
Accrued compensation and benefits	16	24
Other current liabilities	160	154
Liabilities held for sale	731	833
Global Workplace Solutions
Assets and Liabilities Held for Sale, Specific Transactions [Line Items]
Cash and cash equivalents	19	20
Accounts receivable - net	756	723
Inventories	6	9
Other current assets	57	57
Property, plant and equipment - net	38	34
Goodwill	245	253
Other intangible assets - net	34	35
Investments in partially-owned affiliates	0	0
Other noncurrent assets	57	47
Assets held for sale	1,212	1,178
Short-term debt	6	3
Accounts payable	614	591
Accrued compensation and benefits	102	128
Other current liabilities	253	246
Liabilities held for sale	$ 975	$ 968