Borrowings and Bank Deposits (Parenthetical) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Borrowings And Bank Deposits [Line Items]
GECC issued and outstanding senior, unsecured debt guaranteed by the FDIC	$ 0		$ 35,040
Long-term borrowings	224,776		234,391
Secured Debt	9,757		8,538
Principal Amount Of GICs Redeemed	386	1,981
U.S. dollar equivalent of subordinated debentures hedged at issuance	7,725
Bank deposits	46,461		43,115
Short-term borrowings	95,940		136,333
Non Recourse Borrowings Of Consolidated Securitization Entities	30,123		29,258
Current Portion Of Long Term Borrowings [Member]
Borrowings And Bank Deposits [Line Items]
Short-term borrowings	44,264		82,650
Non Recourse Borrowings Of Consolidated Securitization Entities	9,095		10,714
Long-term Debt [Member]
Borrowings And Bank Deposits [Line Items]
Long-term borrowings	224,776		234,391
Non Recourse Borrowings Of Consolidated Securitization Entities	21,028		18,544
Guaranteed investment contracts [Member]
Borrowings And Bank Deposits [Line Items]
Long-term borrowings	604		1,845
Subordinated Notes Guaranteed By GE [Member]
Borrowings And Bank Deposits [Line Items]
Long-term debt, current maturities			117
Long-term borrowings	300		417
Non US Banks [Member]
Borrowings And Bank Deposits [Line Items]
Bank deposits	16,157		16,281
Subordinated Debenture [Member]
Borrowings And Bank Deposits [Line Items]
Long-term borrowings	2,889
Non Recourse [Member]
Borrowings And Bank Deposits [Line Items]
Secured Debt	3,294		2,983
Certificates of Deposit [Member]
Borrowings And Bank Deposits [Line Items]
Bank deposits	$ 17,291		$ 17,201