Variable Interest Entities Reflects adoption of ASU 2015-12 - Schedule of VIE Assets and Liabilities (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 3,920	$ 6,302
Investments:
Trading debt securities	180	265
Equity securities	537	452
Total investments	1,989	1,796
Other assets	3,078	2,128
Liabilities of consolidated VIEs:
Borrowings	(5,964)	(4,979)
Other liabilities	(2,646)	(1,889)
NCI	(57)	(59)
Consolidated Variable Interest Entities [Member]
Variable Interest Entity [Line Items]
Cash and cash equivalents	103	186
Investments:
Trading debt securities	939	1,395
Equity securities	736	569
Bank loans	145	84
Other investments	182	263
Carried interest	429	369
Total investments	2,431	2,680
Other assets	63	876
Total assets of consolidated VIEs	2,597	3,742
Liabilities of consolidated VIEs:
Borrowings	(142)	(84)
Other liabilities	(502)	(1,290)
NCI	(723)	(1,076)
BlackRock's net interests in consolidated VIEs	$ 1,230	$ 1,292

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Investments in bank loans.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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