Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Financial Assets Liabilities Summary

The table below presents financial assets and financial liabilities accounted for at fair value under the fair value option or in accordance with other U.S. GAAP. Counterparty and cash collateral netting represents the impact on derivatives of netting across levels of the fair value hierarchy. Netting among positions classified in the same level is included in that level.

	As of
$ in millions		September 2016		June 2016		December 2015
Total level 1 financial assets		$ 146,775		$ 129,627		$153,051
Total level 2 financial assets		426,203		451,127		432,445
Total level 3 financial assets		24,289		24,732		24,046
Investments in funds at NAV		6,859		7,008		7,757
Counterparty and cash collateral netting		(100,211	)	(102,715	)	(90,612	)
Total financial assets at fair value		$ 503,915		$ 509,779		$526,687
Total assets		$ 879,987		$ 896,843		$861,395
Total level 3 financial assets divided by:
Total assets		2.8%		2.8%		2.8%
Total financial assets at fair value		4.8%		4.9%		4.6%
Total level 1 financial liabilities		$   62,631		$   62,841		$  59,798
Total level 2 financial liabilities		243,800		256,973		245,759
Total level 3 financial liabilities		19,021		19,335		16,812
Counterparty and cash collateral netting		(50,650	)	(51,496	)	(41,430	)
Total financial liabilities at fair value		$ 274,802		$ 287,653		$280,939
Total level 3 financial liabilities divided by:
Total financial liabilities at fair value		6.9%		6.7%		6.0%

Total Level 3 Financial Assets

The table below presents a summary of level 3 financial assets.

	As of
$ in millions		September 2016	June 2016	December 2015
Cash instruments		$   18,141	$   18,131	$  18,131
Derivatives		6,093	6,553	5,870
Other financial assets		55	48	45
Total		$   24,289	$   24,732	$  24,046