STOCKHOLDERS' EQUITY - Share Repurchase Program (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended			3 Months Ended			3 Months Ended
	Jun. 30, 2013	Jun. 30, 2014		Jun. 30, 2013	Jun. 30, 2014 Goldman, Sachs & Co. share repurchase program		May 02, 2014 Goldman, Sachs & Co. share repurchase program	Jun. 30, 2014 Common stock and APIC Goldman, Sachs & Co. share repurchase program	Jun. 30, 2014 Retained earnings Goldman, Sachs & Co. share repurchase program
Accelerated Share Repurchases [Line Items]
Amount authorized under accelerated share repurchase program							$ 1,000,000,000
Up-front payment pursuant to accelerated share repurchase program					1,000,000,000
Number of shares repurchased	0.5	2.5	[1]	0.8	2.5	[1]
Value of shares repurchased	269,600,000			415,400,000	905,100,000
Remaining up-front payment, forward contract					94,900,000
Average price per share (in dollars per share)	$ 493.49			$ 491.28
Shares retired								$ 89,600,000	$ 815,500,000

[1] The number of shares represents shares delivered in the second quarter of 2014 and does not represent the final number of shares to be delivered under the ASR Program. Therefore, the average price paid per share will be determined at the end of the applicable purchase period.