Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

Goodwill and Other Intangible Assets Schedule of Goodwill by Segment (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Nov. 30, 2012	Dec. 31, 2011	Dec. 31, 2010
Goodwill [Line Items]
Goodwill	$ 14,396		$ 5,537	$ 5,454
Goodwill related to Cooper acquistion		8,504
Cooper goodwill allocated to Electrical Americas	601
Cooper goodwill allocated to Electrical Rest of World	191
Electrical Americas [Member]
Goodwill [Line Items]
Goodwill	2,677		2,043
Electrical Rest of World [Member]
Goodwill [Line Items]
Goodwill	1,188		981
Cooper [Member]
Goodwill [Line Items]
Goodwill	7,725		0
Hydraulics [Member]
Goodwill [Line Items]
Goodwill	1,404		1,116
Aerospace [Member]
Goodwill [Line Items]
Goodwill	1,045		1,040
Truck [Member]
Goodwill [Line Items]
Goodwill	149		150
Automotive [Member]
Goodwill [Line Items]
Goodwill	$ 208		$ 207