BlackRock (BLK) 10-Q 8 Aug 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Jul. 31, 2019
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Registrant Name	BlackRock Inc.
Entity Central Index Key	0001364742
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		154,573,783
Entity Current Reporting Status	Yes
Entity File Number	001-33099
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	32-0174431
Entity Address, Address Line One	55 East 52nd Street
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10055
City Area Code	212
Local Phone Number	810-5300
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Common Stock, $.01 Par Value [Member]
Document Information [Line Items]
Trading Symbol	BLK
Title of 12(b) Security	Common Stock, $.01 par value
Security Exchange Name	NYSE
1.250% Notes due 2025 [Member]
Document Information [Line Items]
Trading Symbol	BLK25
Title of 12(b) Security	1.250% Notes due 2025
Security Exchange Name	NYSE

Condensed Consolidated Statemen

Condensed Consolidated Statements of Financial Condition - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 3,920	$ 6,302
Accounts receivable	2,863	2,657
Investments	1,989	1,796
Separate account assets	96,807	90,285
Separate account collateral held under securities lending agreements	18,446	20,655
Property and equipment (net of accumulated depreciation of $836 and $750 at June 30, 2019and December 31, 2018, respectively)	659	643
Intangible assets (net of accumulated amortization of $284 and $244 at June 30, 2019 andDecember 31, 2018, respectively)	18,477	17,839
Goodwill	14,511	13,526
Other assets	3,078	2,128
Total assets	163,347	159,573
Liabilities
Accrued compensation and benefits	1,078	1,988
Accounts payable and accrued liabilities	1,277	1,292
Borrowings	5,964	4,979
Separate account liabilities	96,807	90,285
Separate account collateral liabilities under securities lending agreements	18,446	20,655
Deferred income tax liabilities	3,825	3,571
Other liabilities	2,646	1,889
Total liabilities	130,687	126,033
Commitments and contingencies (Note 14)
Temporary equity
Redeemable noncontrolling interests	710	1,107
Permanent Equity
Common stock, $0.01 par value:Shares authorized: 500,000,000 at June 30, 2019 and December 31, 2018;Shares issued: 171,252,185 at June 30, 2019 and December 31, 2018;Shares outstanding: 154,543,673 and 157,553,501 at June 30, 2019 andDecember 31, 2018, respectively	2	2
Preferred stock (Note 19)	0	0
Additional paid-in capital	18,947	19,168
Retained earnings	20,267	19,282
Accumulated other comprehensive loss	(664)	(691)
Treasury stock, common, at cost (16,708,512 and 13,698,684 shares held at June 30, 2019 and December 31, 2018, respectively)	(6,659)	(5,387)
Total BlackRock, Inc. stockholders’ equity	31,893	32,374
Nonredeemable noncontrolling interests	57	59
Total permanent equity	31,950	32,433
Total liabilities, temporary equity and permanent equity	163,347	159,573
Consolidated Variable Interest Entities [Member]
Assets
Cash and cash equivalents	103	186
Investments	2,431	2,680
Other assets	63	876
Liabilities
Borrowings	142	84
Other liabilities	502	1,290
Permanent Equity
Nonredeemable noncontrolling interests	$ 723	$ 1,076

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Property and equipment, accumulated depreciation	$ 836	$ 750
Intangible assets, accumulated amortization	$ 284	$ 244
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	171,252,185	171,252,185
Common stock, shares outstanding	154,543,673	157,553,501
Treasury stock, common shares	16,708,512	13,698,684

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue
Total revenue	$ 3,524	$ 3,605	$ 6,870	$ 7,188
Expense
Employee compensation and benefits	1,083	1,082	2,147	2,203
Distribution and servicing costs	416	415	820	847
Direct fund expense	252	264	494	525
General and administration	470	393	858	776
Amortization of intangible assets	25	11	40	22
Total expense	2,246	2,165	4,359	4,373
Operating income	1,278	1,440	2,511	2,815
Nonoperating income (expense)
Net gain (loss) on investments	89	3	231	18
Interest and dividend income	20	19	49	34
Interest expense	(52)	(46)	(98)	(92)
Total nonoperating income (expense)	57	(24)	182	(40)
Income before income taxes	1,335	1,416	2,693	2,775
Income tax expense	322	338	620	603
Net income	1,013	1,078	2,073	2,172
Net income (loss) attributable to noncontrolling interests	10	5	17	10
Net income attributable to BlackRock, Inc.	$ 1,003	$ 1,073	$ 2,056	$ 2,162
Earnings per share attributable to BlackRock, Inc. common stockholders:
Basic	$ 6.46	$ 6.67	$ 13.11	$ 13.42
Diluted	$ 6.41	$ 6.62	$ 13.02	$ 13.30
Weighted-average common shares outstanding:
Basic	155,354,552	160,980,960	156,803,244	161,114,746
Diluted	156,360,741	162,161,937	157,853,711	162,532,637
Investment Advisory, Administration Fees and Securities Lending Revenue [Member]
Revenue
Total revenue	$ 2,903	$ 2,944	$ 5,708	$ 5,891
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Related Parties [Member]
Revenue
Total revenue	2,061	2,087	4,050	4,199
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Other Third Parties [Member]
Revenue
Total revenue	842	857	1,658	1,692
Investment Advisory Performance Fees [Member]
Revenue
Total revenue	64	91	90	161
Technology Services Revenue [Member]
Revenue
Total revenue	237	198	441	382
Distribution Fees [Member]
Revenue
Total revenue	267	294	529	605
Advisory and Other Revenue [Member]
Revenue
Total revenue	$ 53	$ 78	$ 102	$ 149

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 1,013	$ 1,078	$ 2,073	$ 2,172
Other comprehensive income (loss):
Foreign currency translation adjustments	[1]	(41)	(274)	27	(137)
Comprehensive income (loss)		972	804	2,100	2,035
Less: Comprehensive income (loss) attributable to noncontrolling interests		10	5	17	10
Comprehensive income attributable to BlackRock, Inc.		$ 962	$ 799	$ 2,083	$ 2,025
[1]	Amounts for the three months ended June 30, 2019 and 2018 include a loss from a net investment hedge of $8 million (net of tax benefit of $2 million) and a gain of $34 million (net of tax of $11 million), respectively. Amounts for the six months ended June 30, 2019 and 2018 include gains from a net investment hedge of $3 million (net of tax of $1 million) and $18 million (net of tax of $6 million), respectively.

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Gain (loss) from net investment hedging, net of tax	$ (8)	$ 34	$ 3	$ 18
Gain (loss) from net investment hedging, tax (expenses) benefit	$ 2	$ (11)	$ (1)	$ (6)

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Additional Paid-in Capital [Member]		Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock Common [Member]	Total BlackRock Stockholders' Equity [Member]	Nonredeemable Noncontrolling Interests [Member]	Redeemable Noncontrolling Interests / Temporary Equity [Member]
Balance at Dec. 31, 2017	$ 31,848	$ 19,258	[1]	$ 16,939	$ (432)	$ (3,967)	$ 31,798	$ 50	$ 416
Net income	2,171			2,162			2,162	9	1
Dividends declared	(969)			(969)			(969)
Stock-based compensation	310	310	[1]				310
PNC preferred stock capital contribution	58	58	[1]				58
Retirement of preferred stock	(58)	(58)	[1]				(58)
Issuance of common shares related to employee stock transactions	6	(613)	[1]			619	6
Employee tax withholdings related to employee stock transactions	(405)					(405)	(405)
Shares repurchased	(635)					(635)	(635)
Subscriptions (redemptions/distributions) — noncontrolling interest holders	(5)							(5)	535
Net consolidations (deconsolidations) of sponsored investment funds									(266)
Other comprehensive income (loss)	(137)				(137)		(137)
Adoption of accounting guidance				6	(6)
Balance at Jun. 30, 2018	32,184	18,955	[1],[2]	18,138	(575)	(4,388)	32,130	54	686
Balance at Mar. 31, 2018	32,022	18,858	[2]	17,529	(301)	(4,108)	31,978	44	561
Net income	1,083			1,073			1,073	10	(5)
Dividends declared	(464)			(464)			(464)
Stock-based compensation	135	135	[2]				135
Issuance of common shares related to employee stock transactions	3	(38)	[2]			41	3
Employee tax withholdings related to employee stock transactions	(21)					(21)	(21)
Shares repurchased	(300)					(300)	(300)
Subscriptions (redemptions/distributions) — noncontrolling interest holders									183
Net consolidations (deconsolidations) of sponsored investment funds									(53)
Other comprehensive income (loss)	(274)				(274)		(274)
Balance at Jun. 30, 2018	32,184	18,955	[1],[2]	18,138	(575)	(4,388)	32,130	54	686
Balance at Dec. 31, 2018	32,433	19,170	[3]	19,282	(691)	(5,387)	32,374	59	1,107
Net income	2,056			2,056			2,056		17
Dividends declared	(1,071)			(1,071)			(1,071)
Stock-based compensation	294	294	[3]				294
PNC preferred stock capital contribution	60	60	[3]				60
Retirement of preferred stock	(60)	(60)	[3]				(60)
Issuance of common shares related to employee stock transactions	8	(515)	[3]			523	8
Employee tax withholdings related to employee stock transactions	(229)					(229)	(229)
Shares repurchased	(1,566)					(1,566)	(1,566)
Subscriptions (redemptions/distributions) — noncontrolling interest holders	1							1	443
Net consolidations (deconsolidations) of sponsored investment funds	(3)							(3)	(857)
Other comprehensive income (loss)	27				27		27
Balance at Jun. 30, 2019	31,950	18,949	[3],[4]	20,267	(664)	(6,659)	31,893	57	710
Balance at Mar. 31, 2019	31,362	18,829	[4]	19,779	(623)	(6,676)	31,309	53	1,009
Net income	1,003			1,003			1,003		10
Dividends declared	(515)			(515)			(515)
Stock-based compensation	140	140	[4]				140
Issuance of common shares related to employee stock transactions	4	(20)	[4]			24	4
Employee tax withholdings related to employee stock transactions	(7)					(7)	(7)
Subscriptions (redemptions/distributions) — noncontrolling interest holders	6							6	243
Net consolidations (deconsolidations) of sponsored investment funds	(2)							(2)	(552)
Other comprehensive income (loss)	(41)				(41)		(41)
Balance at Jun. 30, 2019	$ 31,950	$ 18,949	[3],[4]	$ 20,267	$ (664)	$ (6,659)	$ 31,893	$ 57	$ 710
[1]	Amounts include $2 million of common stock at both June 30, 2018 and December 31, 2017.
[2]	Amounts include $2 million of common stock at both June 30, 2018 and March 31, 2018.
[3]	Amounts include $2 million of common stock at both June 30, 2019 and December 31, 2018.
[4]	Amounts include $2 million of common stock at both June 30, 2019 and March 31, 2019.

Condensed Consolidated Statem_7

Condensed Consolidated Statements of Changes in Equity (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Additional Paid-in Capital, value of stock	$ 31,950	$ 32,184	$ 31,950	$ 32,184	$ 31,362	$ 32,433	$ 32,022	$ 31,848
Common Stock [Member]
Additional Paid-in Capital, value of stock	$ 2	$ 2	$ 2	$ 2	$ 2	$ 2	$ 2	$ 2
Dividends declared, amount per share	$ 3.30	$ 2.88	$ 6.60	$ 5.76

Condensed Consolidated Statem_8

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities
Net income	$ 2,073	$ 2,172
Adjustments to reconcile net income to net cash provided by/(used in) operating activities:
Depreciation and amortization	189	107
Stock-based compensation	294	310
Deferred income tax expense (benefit)	60	2
Other gains	(26)
Net (gains) losses within consolidated VIEs	(133)	12
Net (purchases) proceeds within consolidated VIEs	(453)	(531)
(Earnings) losses from equity method investees	(56)	(65)
Distributions of earnings from equity method investees	21	17
Changes in operating assets and liabilities:
Accounts receivable	(131)	78
Investments, trading	(157)	36
Other assets	(208)	(178)
Accrued compensation and benefits	(930)	(992)
Accounts payable and accrued liabilities	(16)	27
Other liabilities	170	292
Net cash provided by/(used in) operating activities	697	1,287
Investing activities
Purchases of investments	(73)	(200)
Proceeds from sales and maturities of investments	71	161
Distributions of capital from equity method investees	47	12
Net consolidations (deconsolidations) of sponsored investment funds (VIEs/VREs)	(97)	(52)
Acquisition, net of cash acquired	(1,506)
Purchases of property and equipment	(105)	(63)
Net cash provided by/(used in) investing activities	(1,663)	(142)
Financing activities
Proceeds from long-term borrowings	992
Cash dividends paid	(1,071)	(969)
Repurchases of common stock	(1,795)	(1,040)
Net proceeds from (repayments of) borrowings by consolidated VIEs	58
Net (redemptions/distributions paid)/subscriptions received from noncontrolling interest holders	444	530
Other financing activities	(136)	6
Net cash provided by/(used in) financing activities	(1,508)	(1,473)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	9	(27)
Net increase/(decrease) in cash, cash equivalents and restricted cash	(2,465)	(355)
Cash, cash equivalents and restricted cash, beginning of period	6,505	7,096
Cash, cash equivalents and restricted cash, end of period	4,040	6,741
Supplemental disclosure of cash flow information:
Interest	93	94
Income taxes (net of refunds)	604	589
Supplemental schedule of noncash investing and financing transactions:
Issuance of common stock	515	613
PNC preferred stock capital contribution	60	58
Increase (decrease) in noncontrolling interests due to net consolidation (deconsolidation) of sponsored investment funds	$ (860)	$ (266)

Business Overview

Business Overview	6 Months Ended
	Jun. 30, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Business Overview	1. Business Overview BlackRock, Inc. (together, with its subsidiaries, unless the context otherwise indicates, “BlackRock” or the “Company”) is a leading publicly traded investment management firm providing a broad range of investment and technology services to institutional and retail clients worldwide. BlackRock’s diverse platform of alpha-seeking active, index and cash management investment strategies across asset classes enables the Company to tailor investment outcomes and asset allocation solutions for clients. Product offerings include single- and multi-asset portfolios investing in equities, fixed income, alternatives and money market instruments. Products are offered directly and through intermediaries in a variety of vehicles, including open-end and closed-end mutual funds, iShares ® BlackRock also offers technology services, including the investment and risk management technology platform, Aladdin ® At June 30, 2019, The PNC Financial Services Group, Inc. (“PNC”) held 22.0% of the Company’s voting common stock and 22.4% of the Company’s capital stock, which includes outstanding common and nonvoting preferred stock.

Significant Accounting Policies

Significant Accounting Policies	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Significant Accounting Policies	2. Significant Accounting Policies Basis of Presentation These condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and include the accounts of the Company and its controlled subsidiaries. Noncontrolling interests (“NCI”) on the condensed consolidated statements of financial condition represents the portion of consolidated sponsored investment funds in which the Company does not have direct equity ownership. Accounts and transactions between consolidated entities have been eliminated. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting periods. Actual results could differ from those estimates. Certain financial information that normally is included in annual financial statements, including certain financial statement footnotes, is not required for interim reporting purposes and has been condensed or omitted herein. These condensed consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and notes related thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018, which was filed with the Securities and Exchange Commission (“SEC”) on February 28, 2019 (“2018 Form 10-K”). The interim financial information at June 30, 2019 and for the three and six months ended June 30, 2019 and 2018 is unaudited. However, in the opinion of management, the interim information includes all normal recurring adjustments necessary for the fair presentation of the Company’s results for the periods presented. The results of operations for interim periods are not necessarily indicative of results to be expected for the full year. Certain prior period presentations and disclosures were reclassified to ensure comparability with current period classifications. Accounting Pronouncements Adopted in the Six Months Ended June 30, 2019 Leases . In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, , and several amendments (collectively, “ASU 2016-02”), which requires lessees to recognize assets and liabilities arising from most operating leases on the condensed consolidated statements of financial condition. The Company adopted ASU 2016-02 on its effective date of January 1, 2019 on a modified retrospective basis and elected not to apply ASU 2016-02 to the comparative periods presented. Under this transition method, any cumulative effect adjustment is recognized in the opening balance of retained earnings in the period of adoption. The Company elected the package of practical expedients to alleviate certain operational complexities related to the adoption, which among other things, allowed the Company to carry forward the existing lease classification. The Company elected to account for lease and non-lease components as a single component for its leases. The Company also elected the short-term lease practical expedient for its leases. Consequently, leases with an initial term of 12 months or less are not recorded on the condensed consolidated statement of financial condition. Upon adoption of ASU 2016-02, the Company recorded a net increase of approximately $0.7 billion in its assets and liabilities related to the right-of-use (“ROU”) asset and lease liability for its operating leases. The adoption of ASU 2016-02 did not have a material impact on the condensed consolidated statement of income or cash flows. See Note 10, Leases Fair Value Measurements Hierarchy of Fair Value Inputs. The Company uses a fair value hierarchy that prioritizes inputs to valuation approaches used to measure fair value. The fair value hierarchy gives the highest priority to quoted prices (unadjusted) in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. Assets and liabilities measured and reported at fair value are classified and disclosed in one of the following categories: Level 1 Inputs: Quoted prices (unadjusted) in active markets for identical assets or liabilities at the reporting date. • Level 1 assets may include listed mutual funds, ETFs, listed equities and certain exchange-traded derivatives. Level 2 Inputs: Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities that are not active; quotes from pricing services or brokers for which the Company can determine that orderly transactions took place at the quoted price or that the inputs used to arrive at the price are observable; and inputs other than quoted prices that are observable, such as models or other valuation methodologies. • Level 2 assets may include debt securities, investments in collateralized loan obligations (“CLOs”), bank loans, short-term floating-rate notes, asset-backed securities, securities held within consolidated hedge funds, restricted public securities valued at a discount, as well as over-the-counter derivatives, including interest and inflation rate swaps and foreign currency exchange contracts that have inputs to the valuations that generally can be corroborated by observable market data. Level 3 Inputs: Unobservable inputs for the valuation of the asset or liability, which may include nonbinding broker quotes. Level 3 assets include investments for which there is little, if any, market activity. These inputs require significant management judgment or estimation. • Level 3 assets may include direct private equity investments held within consolidated funds, investments in CLOs and bank loans of consolidated CLOs. • Level 3 liabilities include contingent liabilities related to acquisitions valued based upon discounted cash flow analyses using unobservable market data and borrowings of consolidated CLOs. Significance of Inputs. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the financial instrument. Valuation Approaches. The fair values of certain Level 3 assets and liabilities were determined using various valuation approaches as appropriate, including third-party pricing vendors, broker quotes and market and income approaches. A significant number of inputs used to value equity, debt securities, investments in CLOs and bank loans is sourced from third-party pricing vendors. Generally, prices obtained from pricing vendors are categorized as Level 1 inputs for identical securities traded in active markets and as Level 2 for other similar securities if the vendor uses observable inputs in determining the price. In addition, quotes obtained from brokers generally are nonbinding and categorized as Level 3 inputs. However, if the Company is able to determine that market participants have transacted for the asset in an orderly manner near the quoted price or if the Company can determine that the inputs used by the broker are observable, the quote is classified as a Level 2 input. Investments Measured at Net Asset Values. As a practical expedient, the Company uses net asset value (“NAV”) as the fair value for certain investments. The inputs to value these investments may include the Company’s capital accounts for its partnership interests in various alternative investments, including hedge funds, real assets and private equity funds, which may be adjusted by using the returns of certain market indices. The various partnerships generally are investment companies, which record their underlying investments at fair value based on fair value policies established by management of the underlying fund. Fair value policies at the underlying fund generally require the fund to utilize pricing/valuation information from third-party sources, including independent appraisals. However, in some instances, current valuation information for illiquid securities or securities in markets that are not active may not be available from any third-party source or fund management may conclude that the valuations that are available from third-party sources are not reliable. In these instances, fund management may perform model-based analytical valuations that could be used as an input to value these investments. Fair Value of Assets and Liabilities of Consolidated CLO. The Company applies the fair value option provisions for eligible assets, including bank loans, held by consolidated CLOs. As the fair value of the financial assets of the consolidated CLO is more observable than the fair value of the borrowings of the consolidated CLO, the Company measures the fair value of the borrowings of the consolidated CLO as the fair value of the assets of the consolidated CLO less the fair value of the Company’s economic interest in the CLO. Derivatives and Hedging Activities . The Company does not use derivative financial instruments for trading or speculative purposes. The Company uses derivative financial instruments primarily for purposes of hedging exposures to fluctuations in foreign currency exchange rates of certain assets and liabilities, and market exposures for certain seed investments. However, certain consolidated sponsored investment funds may also utilize derivatives as a part of their investment strategy. Changes in the fair value of the Company’s derivative financial instruments are recognized in earnings and, where applicable, are offset by the corresponding gain or loss on the related foreign-denominated assets or liabilities or hedged investments, on the condensed consolidated statements of income. The Company may also use financial instruments designated as net investment hedges for accounting purposes to hedge net investments in international subsidiaries whose functional currency is not US dollars. The gain or loss from revaluing accounting hedges of net investments in foreign operations at the spot rate is deferred and reported within accumulated other comprehensive income (loss) on the condensed consolidated statements of financial condition. Amounts excluded from the effectiveness assessment are reported in the condensed consolidated statements of income using a systematic and rational method. The Company reassesses the effectiveness of its net investment hedges at least quarterly. Leases . The Company determines if a contract is a lease or contains a lease at inception. The Company accounts for its office facility leases as operating leases, which may include escalation clauses that are based on an index or market rate. The Company accounts for lease and non-lease components as a single component for its leases. The Company elected the short-term lease exception for l eases with an initial term of 12 months or less. Consequently, such leases are not recorded on the condensed consolidated statement of financial condition. The Company’s lease terms include options to extend or terminate the lease when it is reasonably certain they will be exercised or not, respectively. Fixed lease payments are included in ROU assets and lease liabilities within other assets and other liabilities, respectively, on the condensed consolidated statement of financial condition. Upon adoption of ASU 2016-02, for existing leases, the Company elected to determine the discount rate based on the remaining lease term as of January 1, 2019 and for lease payments based on an index or rate to apply the rate at commencement date. For new leases, the discount rates are based on the entire noncancelable lease term. Separate Account Assets and Liabilities . Separate account assets are maintained by BlackRock Life Limited, a wholly owned subsidiary of the Company, which is a registered life insurance company in the United Kingdom, and represent segregated assets held for purposes of funding individual and group pension contracts. The life insurance company does not underwrite any insurance contracts that involve any insurance risk transfer from the insured to the life insurance company. The separate account assets primarily include equity securities, debt securities, money market funds and derivatives. The separate account assets are not subject to general claims of the creditors of BlackRock. These separate account assets and the related equal and offsetting liabilities are recorded as separate account assets and separate account liabilities on the condensed consolidated statements of financial condition. The net investment income attributable to separate account assets supporting individual and group pension contracts accrues directly to the contract owner and is not reported on the condensed consolidated statements of income. While BlackRock has no economic interest in these separate account assets and liabilities, BlackRock earns policy administration and management fees associated with these products, which are included in investment advisory, administration fees and securities lending revenue on the condensed consolidated statements of income. Separate Account Collateral Assets Held and Liabilities Under Securities Lending Agreements. The Company facilitates securities lending arrangements whereby securities held by separate accounts maintained by BlackRock Life Limited are lent to third parties under global master securities lending agreements. In exchange, the Company receives legal title to the collateral with minimum values generally ranging from approximately 102% to 112% of the value of the securities lent in order to reduce counterparty risk. The required collateral value is calculated on a daily basis. The global master securities lending agreements provide the Company the right to request additional collateral or, in the event of borrower default, the right to liquidate collateral. The securities lending transactions entered into by the Company are accompanied by an agreement that entitles the Company to request the borrower to return the securities at any time; therefore, these transactions are not reported as sales. The Company records on the condensed consolidated statements of financial condition the cash and noncash collateral received under these BlackRock Life Limited securities lending arrangements as its own asset in addition to an equal and offsetting collateral liability for the obligation to return the collateral. The securities lending revenue earned from lending securities held by the separate accounts is included in investment advisory, administration fees and securities lending revenue on the condensed consolidated statements of income. During the six months ended June 30, 2019 and 2018, the Company had not resold or repledged any of the collateral received under these arrangements. At June 30, 2019 and December 31, 2018, the fair value of loaned securities held by separate accounts was approximately $17.0 billion and $18.9 billion, respectively, and the fair value of the collateral held under these securities lending agreements was approximately $18.4 billion and $20.7 billion, respectively.

Acquisition

Acquisition	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Acquisition	3. Acquisition On May 10, 2019, the Company acquired 100% of the equity interests of eFront Holding SAS (“eFront Transaction” or “eFront”), a leading alternative investment management software and solutions provider for approximately $1.3 billion, excluding the settlement of eFront’s outstanding debt. The acquisition of eFront will expand Aladdin The purchase price was funded through a combination of existing cash and issuance of commercial paper (subsequently repaid with existing cash) and long-term notes in April 2019. See Note 13, Borrowings The purchase price for the eFront Transaction was allocated to the assets acquired and liabilities assumed based upon their estimated fair values at the date of the transaction. The goodwill recognized in connection with the acquisition is non-deductible for tax purposes and is primarily attributable to anticipated synergies from the transaction. A summary of the recorded fair values of the assets acquired and liabilities assumed in this acquisition is as follows (1) Estimate of (in millions) Fair Value Accounts receivable $ 65 Finite-lived intangible assets: Customer relationships (2) 452 Technology-related (3) 205 Trade name (4) 21 Goodwill 990 Other assets 31 Deferred income tax liabilities (194 ) Other liabilities assumed (64 ) Total consideration, net of cash acquired $ 1,506 Estimate of (in millions) Fair Value Cash paid including settlement of outstanding debt of approximately $0.2 billion $ 1,555 Cash acquired (49 ) Total consideration, net of cash acquired $ 1,506 (1) (2) (3) ( 4 ) Finite-lived intangible assets are amortized over their estimated useful lives, which range from five to 11 years. Amortization expense related to the finite-lived intangible assets was $10 million for the three and six months ended June 30, 2019. The finite-lived intangible assets had a weighted-average remaining useful life of approximately 10 years with remaining amortization expense as follows: (in millions) Year Amount 2019 (excluding the six months ended June 30, 2019) $ 32 2020 60 2021 58 2022 64 2023 70 Thereafter 384 Total $ 668 The financial results of eFront have been included in BlackRock’s consolidated financial statements from the closing of the eFront Transaction. For the three and six months ended June 30, 2019, eFront contributed $22 million of revenue and did not have a material impact to net income attributable to BlackRock, Inc. Consequently, the Company has not presented pro forma combined results of operations for this acquisition.

Cash, Cash Equivalents and Rest

Cash, Cash Equivalents and Restricted Cash	6 Months Ended
	Jun. 30, 2019
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents [Abstract]
Cash, Cash Equivalents and Restricted Cash	4. Cash, Cash Equivalents and Restricted Cash The following table provides a reconciliation of cash and cash equivalents reported within the condensed consolidated statements of financial condition to the cash, cash equivalents, and restricted cash reported within the condensed consolidated statements of cash flows. June 30, December 31, (in millions) 2019 2018 Cash and cash equivalents $ 3,920 $ 6,302 Cash and cash equivalents of consolidated VIEs 103 186 Restricted cash included in other assets 17 17 Total cash, cash equivalents and restricted cash $ 4,040 $ 6,505

Investments

Investments	6 Months Ended
	Jun. 30, 2019
Investments Debt And Equity Securities [Abstract]
Investments	5. Investments A summary of the carrying value of total investments is as follows: June 30, December 31, (in millions) 2019 2018 Debt securities: Held-to-maturity investments $ 213 $ 188 Trading securities (debt securities of consolidated sponsored investment funds of $143 and $233 at June 30, 2019 and December 31, 2018, respectively) 180 265 Total debt securities 393 453 Equity securities at FVTNI (1) funds of $309 and $291 at June 30, 2019 and December 31, 2018, respectively) 537 452 Equity method investments (2) 846 781 Federal Reserve Bank stock (3) 93 92 Carried interest (4) 12 18 Other investments (5) 108 — Total investments $ 1,989 $ 1,796 (1) (2) (3) (4) (5) Significant Accounting Policies Held-to-Maturity Investments The carrying value of held-to-maturity investments was $213 million and $188 million at June 30, 2019 and December 31, 2018, respectively. Held-to-maturity investments included foreign government debt held primarily for regulatory purposes and certain investments in CLOs. The amortized cost (carrying value) of these investments approximated fair value (primarily a Level 2 input). At June 30, 2019, $44 million of these investments mature between five to Equity and Trading Debt Securities A summary of the cost and carrying value of equity and trading debt securities is as follows: June 30, 2019 December 31, 2018 (in millions) Cost Carrying Value Cost Carrying Value Trading debt securities: Corporate debt $ 122 $ 122 $ 144 $ 140 Government debt 7 7 69 67 Asset/mortgage-backed debt 51 51 67 58 Total trading debt securities $ 180 $ 180 $ 280 $ 265 Equity securities at FVTNI: Deferred compensation plan mutual funds $ 6 $ 22 $ 21 $ 34 Equity securities/multi-asset mutual funds 473 515 420 418 Total equity securities at FVTNI $ 479 $ 537 $ 441 $ 452 PennyMac In addition, the Company accounts for its interest in PennyMac Financial Services, Inc. (“PennyMac”) as an equity method investment. At June 30, 2019 and December 31, 2018, the Company’s investment in PennyMac is included in other assets on the condensed consolidated statements of financial condition. The carrying value and market value of the Company’s interest (approximately 20% or 16 million shares) were approximately $414 million and $345 million, respectively, at June 30, 2019 and approximately $397 million and $331 million, respectively, at December 31, 2018. The market value of the Company’s interest reflected the PennyMac stock price at June 30, 2019 and December 31, 2018, respectively (a Level 1 input). The Company performed an other-than-temporary impairment analysis as of June 30, 2019 and believes the shortfall of market value versus carrying value is temporary.

Consolidated Voting Rights Enti

Consolidated Voting Rights Entities	6 Months Ended
	Jun. 30, 2019
Text Block [Abstract]
Consolidated Voting Rights Entities	6. Consolidated Voting Rights Entities The Company consolidates certain sponsored investment funds accounted for as VREs because it is deemed to control such funds. The following table presents the amounts related to these consolidated VREs that were recorded on the condensed consolidated statements of financial condition, including BlackRock’s net interest in these funds: June 30, December 31, (in millions) 2019 2018 Cash and cash equivalents $ 13 $ 59 Investments: Trading debt securities 143 233 Equity securities at FVTNI 309 291 Total investments 452 524 Other assets 7 8 Other liabilities (10 ) (53 ) NCI (44 ) (90 ) BlackRock’s net interests in consolidated VREs $ 418 $ 448 BlackRock’s total exposure to consolidated VREs represents the value of its economic ownership interest in these sponsored investment funds. Valuation changes associated with investments held at fair value by these consolidated VREs are reflected in nonoperating income (expense) and partially offset in net income (loss) attributable to noncontrolling interests for the portion not attributable to BlackRock. The Company cannot readily access cash and cash equivalents held by consolidated VREs to use in its operating activities.

Variable Interest Entities

Variable Interest Entities	6 Months Ended
	Jun. 30, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Variable Interest Entities	7. Variable Interest Entities In the normal course of business, the Company is the manager of various types of sponsored investment vehicles, which may be considered variable interest entities (“VIEs”). The Company may from time to time own equity or debt securities or enter into derivatives with the vehicles, each of which are considered variable interests. The Company’s involvement in financing the operations of the VIEs is generally limited to its investments in the entity. The Company consolidates entities when it is determined to be the primary beneficiary (“PB”). Consolidated VIEs. The Company’s consolidated VIEs include certain sponsored investment products in which BlackRock has an investment and as the investment manager is deemed to have both the power to direct the most significant activities of the products and the right to receive benefits (or the obligation to absorb losses) that could potentially be significant to these sponsored investment products. The assets of these VIEs are not available to creditors of the Company. In addition, the investors in these VIEs have no recourse to the credit of the Company. Consolidated VIE assets and liabilities are presented after intercompany eliminations in the following table: June 30, December 31, (in millions) 2019 2018 Assets of consolidated VIEs: Cash and cash equivalents $ 103 $ 186 Investments: Trading debt securities 939 1,395 Equity securities at FVTNI 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 Net gain (loss) related to consolidated VIEs is presented in the following table: Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 Nonoperating net gain (loss) on consolidated VIEs $ 39 $ (14 ) $ 133 $ (12 ) Net income (loss) attributable to NCI on consolidated VIEs $ 12 $ 6 $ 17 $ 11 Non c onsolidated VIEs . At June 30 , 2019 and December 31, 2018 , the Company’s carrying value of assets and liabilities included on the condensed consolidated statements of financial condition pertaining to nonconsolidated VIEs and its maximum risk of loss related to VIEs for which it held a variable interest, but for which it was not the PB, was as follows: (in millions) At June 30, 2019 Investments Advisory Fee Receivables Other Net Assets (Liabilities) Maximum Risk (1) Sponsored investment products $ 492 $ 65 $ (7 ) $ 574 At December Sponsored investment products $ 348 $ 43 $ (6 ) $ 408 (1) At both June 30, 2019 and December 31, 2018, BlackRock’s maximum risk of loss associated with these VIEs primarily related to BlackRock’s investments and the collection of advisory fee receivables. The net assets of sponsored investment products that are nonconsolidated VIEs approximated $11 billion and $9 billion at June 30, 2019 and December 31, 2018, respectively.

Fair Value Disclosures

Fair Value Disclosures	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Disclosures	8. Fair Value Disclosures Fair Value Hierarchy Assets and liabilities measured at fair value on a recurring basis June 30, 2019 (in millions) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Investments Measured at NAV (1) Other (2) June 30, 2019 Assets: Investments: Debt securities: Held-to-maturity securities $ — $ — $ — $ — $ 213 $ 213 Trading securities — 178 2 — — 180 Total debt securities — 178 2 — 213 393 Equity securities at FVTNI: Deferred compensation plan mutual funds 22 — — — — 22 Equity securities/Multi-asset mutual funds 515 — — — — 515 Total equity securities at FVTNI 537 — — — — 537 Equity method: Equity and fixed income mutual funds 140 — — 16 — 156 Other 42 — — 645 3 690 Total equity method 182 — — 661 3 846 Federal Reserve Bank Stock — — — — 93 93 Carried interest — — — — 12 12 Other investments (3) — — — — 108 108 Total investments 719 178 2 661 429 1,989 Investments of consolidated VIEs: Trading debt securities — 939 — — — 939 Equity securities at FVTNI 736 — — — — 736 Bank loans — 20 125 — — 145 Private equity (4) — — 9 33 78 120 Other — — — 62 — 62 Carried interest — — — — 429 429 Total investments of consolidated VIEs 736 959 134 95 507 2,431 Other assets (5) 168 — — — — 168 Separate account assets 69,029 27,001 — — 777 96,807 Separate account collateral held under securities lending agreements: Equity securities 12,113 — — — — 12,113 Debt securities — 6,333 — — — 6,333 Total separate account collateral held under securities lending agreements 12,113 6,333 — — — 18,446 Total $ 82,765 $ 34,471 $ 136 $ 756 $ 1,713 $ 119,841 Liabilities: Borrowings of consolidated VIEs (6) $ — $ — $ 142 $ — $ — $ 142 Separate account collateral liabilities under securities lending agreements 12,113 6,333 — — — 18,446 Other liabilities (7) — 7 168 — — 175 Total $ 12,113 $ 6,340 $ 310 $ — $ — $ 18,763 (1) (2) (3) (4) (5) (6) (7) Commitments and Contingencies Assets and liabilities measured at fair value on a recurring basis December 31, 2018 (in millions) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Investments Measured at NAV (1) Other (2) December 31, 2018 Assets: Investments: Debt securities: Held-to-maturity securities $ — $ — $ — $ — $ 188 $ 188 Trading securities — 261 4 — — 265 Total debt securities — 261 4 — 188 453 Equity securities at FVTNI: Deferred compensation plan mutual funds 34 — — — — 34 Equity securities/Multi-asset mutual funds 418 — — — — 418 Total equity securities at FVTNI 452 — — — — 452 Equity method: Equity and fixed income mutual funds 122 — — 14 — 136 Other — — — 642 3 645 Total equity method 122 — — 656 3 781 Federal Reserve Bank Stock — — — — 92 92 Carried interest — — — — 18 18 Total investments 574 261 4 656 301 1,796 Investments of consolidated VIEs: Trading debt securities — 1,395 — — — 1,395 Equity securities at FVTNI 569 — — — — 569 Bank loans — 14 70 — — 84 Private equity (3) — — 82 48 75 205 Other — — — 58 — 58 Carried interest — — — — 369 369 Total investments of consolidated VIEs 569 1,409 152 106 444 2,680 Other assets (4) 122 — — — — 122 Separate account assets 63,610 25,810 — — 865 90,285 Separate account collateral held under securities lending agreements: Equity securities 15,066 — — — — 15,066 Debt securities — 5,589 — — — 5,589 Total separate account collateral held under securities lending agreements 15,066 5,589 — — — 20,655 Total $ 79,941 $ 33,069 $ 156 $ 762 $ 1,610 $ 115,538 Liabilities: Borrowings of consolidated VIEs (5) $ — $ — $ 84 $ — $ — $ 84 Separate account collateral liabilities under securities lending agreements 15,066 5,589 — — — 20,655 Other liabilities (6) — 6 287 — — 293 Total $ 15,066 $ 5,595 $ 371 $ — $ — $ 21,032 (1) (2) (3) (4) (5) (6) Commitments and Contingencies Level 3 Assets. Level 3 assets may include investments in CLOs and bank loans of consolidated CLOs which were valued based on single-broker nonbinding quotes and direct private equity investments which were valued using the market or income approach as described below. Level 3 investments of consolidated VIEs of $134 million and $152 million at June 30, 2019 and December 31, 2018, respectively, related to direct investments in private equity companies held by consolidated private equity funds. At June 30, 2019, Level 3 investments of consolidated VIEs also included bank loans of a consolidated CLO Direct investments in private equity companies may be valued using the market approach or the income approach, or a combination thereof, and were valued based on an assessment of each underlying investment, incorporating evaluation of additional significant third-party financing, changes in valuations of comparable peer companies, the business environment of the companies, market indices, assumptions relating to appropriate risk adjustments for nonperformance and legal restrictions on disposition, among other factors. The fair value derived from the methods used is evaluated and weighted, as appropriate, considering the reasonableness of the range of values indicated. Under the market approach, fair value may be determined by reference to multiples of market-comparable companies or transactions, including earnings before interest, taxes, depreciation and amortization multiples. Under the income approach, fair value may be determined by discounting the expected cash flows to a single present value amount using current expectations about those future amounts. Unobservable inputs used in a discounted cash flow model may include projections of operating performance generally covering a five-year period and a terminal value of the private equity direct investment. For investments utilizing a discounted cash flow valuation technique, a significant increase (decrease) in the discount rate, risk premium or discount for lack of marketability in isolation could have resulted in a significantly lower (higher) fair value measurement as of June 30, 2019. For investments utilizing the market-comparable valuation technique, a significant increase (decrease) in a valuation multiple in isolation could have resulted in a significantly higher (lower) fair value measurement as of June 30, 2019. Level 3 Liabilities. Level 3 other liabilities primarily include recorded contingent liabilities related to certain acquisitions, which were valued based upon discounted cash flow analyses using unobservable market data inputs and borrowings of consolidated VIEs, which were valued based on the fair value of the assets of the consolidated CLO less the fair value of the Company’s economic interest in the CLO. Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Three Months Ended June 30, 2019 (in millions) March 31, 2019 Realized and Unrealized Gains (Losses) Purchases Sales and Maturities Issuances and other Settlements (1) Transfers into Level 3 Transfers out of Level 3 June 30, 2019 Total Net Unrealized Gains (Losses) Included in Earnings (2) Assets: Investments: Debt securities: Trading $ — $ — $ 2 $ — $ — $ — $ — $ 2 Total investments — — 2 — — — — 2 Assets of consolidated VIEs: Bank loans (3) 123 — 2 — — — — 125 Private equity 10 (1 ) — — — — — 9 (1 ) Total Assets of consolidated VIEs 133 (1 ) 2 — — — — 134 (1 ) Total Level 3 assets $ 133 $ (1 ) $ 4 $ — $ — $ — $ — $ 136 $ (1 ) Liabilities: Borrowings of consolidated VIEs (3) $ 134 $ — $ — $ — $ 8 $ — $ — $ 142 $ — Other liabilities (4) 275 (13 ) — — (120 ) — — 168 (13 ) Total Level 3 liabilities $ 409 $ (13 ) $ — $ — $ (112 ) $ — $ — $ 310 $ (13 ) (1) (2) (3) (4) Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Six Months Ended June 30, 2019 (in millions) December 31, 2018 Realized and Unrealized Gains (Losses) Purchases Sales and Maturities Issuances and other Settlements (1) Transfers into Level 3 Transfers out of Level 3 (2) June 30, 2019 Total Net Unrealized Gains (Losses) Included in Earnings (3) Assets: Investments: Debt securities: Trading $ 4 $ — $ 2 $ — $ — $ — $ (4 ) $ 2 Total investments 4 — 2 — — — (4 ) 2 Assets of consolidated VIEs: Bank loans (4) 70 — 55 — — — — 125 Private equity 82 (1 ) — — — — (72 ) 9 (1 ) Total Assets of consolidated VIEs 152 (1 ) 55 — — — (72 ) 134 (1 ) Total Level 3 assets $ 156 $ (1 ) $ 57 $ — $ — $ — $ (76 ) $ 136 $ (1 ) Liabilities: Borrowings of consolidated VIEs (4) $ 84 $ — $ — $ — $ 58 $ — $ — $ 142 $ — Other liabilities (5) 287 (19 ) — — (138 ) — — 168 (19 ) Total Level 3 liabilities $ 371 $ (19 ) $ — $ — $ (80 ) $ — $ — $ 310 $ (19 ) (1) (2) (3) (4) (5) Amounts include contingent liabilities in connection with certain acquisitions. Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Three Months Ended June 30 , 2018 (in millions) March 31, 2018 Realized and Unrealized Gains (Losses) Purchases Sales and Maturities Issuances and other Settlements (1) Transfers into Level 3 Transfers out of Level 3 June 30, 2018 Total Net Unrealized Gains (Losses) Included in Earnings (2) Assets: Investments: Debt securities: Available-for-sale securities (3) $ 26 $ — $ — $ — $ — $ — $ (26 ) $ — Trading 5 — — — — — (5 ) — Total investments 31 — — — — — (31 ) — Assets of consolidated VIEs - Private equity 116 — — (12 ) — — — 104 Total Level 3 assets $ 147 $ — $ — $ (12 ) $ — $ — $ (31 ) $ 104 $ — Liabilities: Other liabilities (4) $ 242 $ 3 $ — $ — $ (16 ) $ — $ — $ 223 $ 3 (1) (2) (3) (4) Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Six Months Ended June 30, 2018 (in millions) December 31, 2017 Realized and Unrealized Gains (Losses) Purchases Sales and Maturities Issuances and other Settlements (1) Transfers into Level 3 Transfers out of Level 3 June 30, 2018 Total Net Unrealized Gains (Losses) Included in Earnings (2) Assets: Investments: Available-for-sale securities (3) $ — $ — $ 26 $ — $ — $ — $ (26 ) $ — Trading — — 5 — — — (5 ) — Total investments — — 31 — — — (31 ) — Assets of consolidated VIEs - Private equity 116 — — (12 ) — — — 104 Total Level 3 assets $ 116 $ — $ 31 $ (12 ) $ — $ — $ (31 ) $ 104 $ — Liabilities: Other liabilities (4) $ 236 $ (3 ) $ — $ — $ (16 ) $ — $ — $ 223 $ (3 ) (1) (2) (3) (4) Realized and Unrealized Gains (Losses) for Level 3 Assets and Liabilities. Realized and unrealized gains (losses) recorded for Level 3 assets and liabilities are reported in nonoperating income (expense) on the condensed consolidated statements of income. A portion of net income (loss) for consolidated sponsored investment funds is allocated to noncontrolling interests to reflect net income (loss) not attributable to the Company. Transfers in and/or out of Levels. Transfers in and/or out of levels are reflected when significant inputs, including market inputs or performance attributes, used for the fair value measurement become observable/unobservable, or when the carrying value of certain equity method investments no longer represents fair value as determined under valuation methodologies. Disclosures of Fair Value for Financial Instruments Not Held at Fair Value . At June 30, 2019 and December 31, 2018, the fair value of the Company’s financial instruments not held at fair value are categorized in the table below: June 30, 2019 December 31, 2018 (in millions) Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Fair Value Hierarchy Financial Assets (1) Cash and cash equivalents $ 3,920 $ 3,920 $ 6,302 $ 6,302 Level 1 (2) (3) Cash and cash equivalents of consolidated VIEs $ 103 $ 103 $ 186 $ 186 Level 1 (2) (3) Other assets $ 63 $ 63 $ 18 $ 18 Level 1 (2) (4) Financial Liabilities: Long-term borrowings $ 5,964 $ 6,257 $ 4,979 $ 5,034 Level 2 (5) (1) See Note 5, Investments (2) Cash and cash equivalents are carried at either cost or amortized cost, which approximates fair value due to their short-term maturities. ( 3 ) At June 30, 2019 and December 31, 2018, approximately $371 million and $173 million, respectively, of money market funds were recorded within cash and cash equivalents on the condensed consolidated statements of financial condition. In addition, at June 30, 2019 and December 31, 2018, approximately $13 million and $7 million, respectively, of money market funds were recorded within cash and cash equivalents of consolidated VIEs. Money market funds are valued based on quoted market prices, or $1.00 per share, which generally is the NAV of the fund. ( 4 ) Other assets include restricted cash and cash collateral deposited with certain derivative counterparties. The carrying values of other assets approximates fair value, due to their short-term maturities. ( 5 ) Long-term borrowings are recorded at amortized cost net of debt issuance costs. The fair value of the long-term borrowings, including the current portion of long-term borrowings, is determined using market prices at the end of June 2019 and December 2018, respectively. See Note 13, Borrowings Investments in Certain Entities that Calculate Net Asset Value Per Share As a practical expedient to value certain investments that do not have a readily determinable fair value and have attributes of an investment company, the Company uses NAV as the fair value. The following tables list information regarding all investments that use a fair value measurement to account for both their financial assets and financial liabilities in their calculation of a NAV per share (or equivalent). June 30, 2019 (in millions) Ref Fair Value Total Unfunded Commitments Redemption Frequency Redemption Notice Period Equity method: (1) Hedge funds/funds of hedge funds (a) $ 188 $ 85 Daily/Monthly (27%) Quarterly (20%) N/R (53%) 1 – 90 days Private equity funds (b) 123 349 N/R N/R Real assets funds (c) 334 142 Quarterly (64%) N/R (36%) 60 days Other 16 11 Daily/Monthly (73%) N/R (27%) 3 – 5 days Consolidated VIEs: Private equity funds of funds (d) 33 11 N/R N/R Hedge fund (a) 4 — Quarterly 90 days Real assets funds (c) 58 10 N/R N/R Total $ 756 $ 608 December 31, 2018 (in millions) Ref Fair Value Total Unfunded Commitments Redemption Frequency Redemption Notice Period Equity method: (1) Hedge funds/funds of hedge funds (a) $ 173 $ 96 Daily/Monthly (30%) Quarterly (18%) N/R (52%) 1 – 90 days Private equity funds (b) 116 83 N/R N/R Real assets funds (c) 353 93 Quarterly (68%) N/R (32%) 60 days Other 14 16 Daily (80%) N/R (20%) 5 days Consolidated VIEs: Private equity funds of funds (d) 48 18 N/R N/R Hedge fund (a) 3 — Quarterly 90 days Real assets funds (c) 55 37 N/R N/R Total $ 762 $ 343 N/R – not redeemable (1) (a) The liquidation period for the investments in the funds that are not subject to redemption is unknown at both June 30, 2019 and December 31, 2018. (b) This category includes several private equity funds that initially invest in nonmarketable securities of private companies, which ultimately may become public in the future. The fair values of these investments have been estimated using capital accounts representing the Company’s ownership interest in the funds as well as other performance inputs. The Company’s investment in each fund is not subject to redemption and is normally returned through distributions as a result of the liquidation of the underlying assets of the private equity funds . The liquidation period for the investments in these funds is unknown at both June 30, 2019 and December 31, 2018. (c) This category includes several real assets funds that invest directly and indirectly in real estate or infrastructure. The fair values of the investments have been estimated using capital accounts representing the Company’s ownership interest in the funds. The Company’s investments that are not subject to redemption or are not currently redeemable are normally returned through distributions and realizations of the underlying assets of the funds . The liquidation periods for the investments in the funds that are not subject to redemptions is unknown at both June 30 , 201 9 and December 31, 201 8 . The total remaining unfunded commitments to real assets funds were $ 152 million and $ million at June 30 , 201 9 and December 31, 201 8 , respectively. The Company had contractual obligations to the real assets funds of $ 145 million at June 30 , 201 9 and $ 117 million at December 31, 201 8 . (d) This category includes the underlying third-party private equity funds within consolidated BlackRock sponsored private equity funds of funds. The fair values of the investments in the third-party funds have been estimated using capital accounts representing the Company’s ownership interest in each fund in the portfolio as well as other performance inputs. These investments are not subject to redemption or are not currently redeemable; however, for certain funds, the Company may sell or transfer its interest, which may need approval by the general partner of the underlying funds. Due to the nature of the investments in this category, the Company reduces its investment by distributions that are received through the realization of the underlying assets of the funds. The liquidation period for the underlying assets of these funds is unknown at both June 30, 2019 and December 31, 2018. The total remaining unfunded commitments to other third-party funds were $11 million and $18 million at June 30, 2019 and December 31, 2018, respectively. The Company had contractual obligations to the consolidated funds of $22 million at both June 30, 2019 and December 31, 2018. Fair Value Option . At both June 30, 2019 and December 31, 2018, the Company elected the fair value option for certain investments in CLOs of approximately $32 million, reported within investments. The following table summarizes information related to assets and liabilities of a consolidated CLO, recorded within investments and borrowings of consolidated VIEs, respectively, for which the fair value option was elected: June 30, December 31, (in millions) 2019 2018 CLO Bank loans: Aggregate principal amounts outstanding $ 145 $ 84 Fair value 145 84 Aggregate unpaid principal balance in excess of (less than) fair value $ — $ — CLO Borrowings: Aggregate principal amounts outstanding $ 142 $ 84 Fair value $ 142 $ 84 At June 30, 2019, the principal amounts outstanding of the borrowings issued by the CLOs mature in 2030. During the three and six months ended June 30, 2019 and December 31, 2018, the net gains (losses) from the change in fair value of the bank loans and borrowings held by the consolidated CLO were not material and were recorded in net gain (loss) on consolidated VIEs on the condensed consolidated statements of income. The change in fair value of the assets and liabilities included interest income and expense, respectively.

Derivatives and Hedging

Derivatives and Hedging	6 Months Ended
	Jun. 30, 2019
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives and Hedging	9. Derivatives and Hedging The Company maintains a program to enter into swaps to hedge against market price and interest rate exposures with respect to certain seed investments in sponsored investment products. At June 30, 2019 and December 31, 2018, the Company had outstanding total return swaps with aggregate notional values of approximately $522 million and $483 million, respectively. At both June 30, 2019 and December 31, 2018, the Company had a derivative providing credit protection of approximately $17 million to a counterparty, representing the Company’s maximum risk of loss with respect to the provision of credit protection. The Company carries the derivative at fair value based on the expected discounted future cash outflows under the arrangement. The Company executes forward foreign currency exchange contracts to mitigate the risk of certain foreign exchange movements. At June 30, 2019 and December 31, 2018, the Company had outstanding forward foreign currency exchange contracts with aggregate notional values of approximately $2.1 billion and The fair values of the outstanding total return swaps, credit default swap and forward foreign currency exchange contracts were not material to the condensed consolidated statement of financial condition at both June 30, 2019 and December 31, 2018. The following table presents gains (losses) recognized in the condensed consolidated statements of income on derivative instruments: Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 Derivative Instruments Statement of Income Classification Gains (Losses) Gains (Losses) Total return swaps Nonoperating income (expense) $ (14 ) $ 2 $ (64 ) $ 7 Forward foreign currency exchange contracts Other general and administration expense (49 ) (93 ) (13 ) (63 ) Total gain (loss) from derivative instruments $ (63 ) $ (91 ) $ (77 ) $ (56 ) The Company consolidates certain sponsored investment funds, which may utilize derivative instruments as a part of the funds’ investment strategies. The change in fair value of such derivatives, which is recorded in nonoperating income (expense), was not material for the three and six months ended June 30, 2019 and 2018. See Note 13, Borrowings

Leases

Leases	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Leases	10. Leases The following table presents components of lease cost included in general and administration expense on the condensed consolidated statement of income: (in millions) Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 Lease cost: Operating lease cost (1) $ 34 $ 68 Variable lease cost (2) 10 18 Total lease cost $ 44 $ 86 (1) (2) Amount includes lease payments, which may be adjusted based on usage, changes in an index or market rate (in millions) Statement of Financial Condition Classification June 30, 2019 Statement of Financial Condition information: Operating lease ROU assets Other assets $ 646 Operating lease liabilities Other liabilities $ 754 Supplemental information related to operating lease is summarized below: (in millions) Six Months Ended June 30, 2019 Supplemental cash flow information: Cash paid for amounts included in the measurement of operating lease liabilities $ 70 Supplemental noncash information: ROU assets in exchange for operating lease liabilities in connection with the adoption of ASU 2016-02 $ 661 ROU assets in exchange for operating lease liabilities $ 44 Six Months Ended June 30, 2019 Lease term and discount rate: Weighted-average remaining lease term 9 years Weighted-average discount rate 3 % (in millions) Maturity of operating lease liabilities at June 30, 2019 Amount (1) Remainder of 2019 $ 72 2020 143 2021 135 2022 123 2023 73 Thereafter 312 Total lease payments $ 858 Less: imputed interest 104 Present value of lease liabilities $ 754 (1) Commitments and Contingencies

Goodwill

Goodwill	6 Months Ended
	Jun. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	11. Goodwill Goodwill activity during the six months ended June 30, 2019 was as follows: (in millions) December 31, 2018 $ 13,526 Acquisition (1) 990 Goodwill adjustments related to Quellos (2) (5 ) June 30, 2019 $ 14,511 (1) Acquisition (2) The decrease in goodwill during the six months ended June 30, 2019 resulted from a decline related to tax benefits realized from tax-deductible goodwill in excess of book goodwill from the acquisition of the fund-of-funds business of Quellos Group, LLC in October 2007 (the “Quellos Transaction”). Goodwill related to the Quellos Transaction will continue to be reduced in future periods by the amount of tax benefits realized from tax-deductible goodwill in excess of book goodwill from the Quellos Transaction. The balance of the Quellos tax-deductible goodwill in excess of book goodwill was approximately $121 million and $137 million at June 30, 2019 and December 31, 2018, respectively.

Intangible Assets

Intangible Assets	6 Months Ended
	Jun. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	12. Intangible Assets The carrying amounts of identifiable intangible assets are summarized as follows: (in millions) Indefinite-lived Finite-lived Total December 31, 2018 $ 17,578 $ 261 $ 17,839 Amortization expense — (40 ) (40 ) Acquisition (1) — 678 678 June 30, 2019 $ 17,578 $ 899 $ 18,477 (1) In connection with the eFront Transaction, which closed on May 10, 2019, the Company acquired $452 million of finite-lived customer relationships, $205 million of finite-lived technology-related intangible assets and $21 million of a finite-lived trade name, with weighted-average estimated lives of approximately 11 years, eight years and five years, respectively. See Note 3, Acquisition , for information on the eFront Transaction.

Borrowings

Borrowings	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Borrowings	13. Borrowings Short-Term Borrowings 2019 Revolving Credit Facility. The Company’s credit facility has an aggregate commitment amount of $4.0 billion and was amended in March 2019 to extend the maturity date to March 2024 (the “2019 credit facility”). The 2019 credit facility permits the Company to request up to an additional $1.0 billion of borrowing capacity, subject to lender credit approval, increasing the overall size of the 2019 credit facility to an aggregate principal amount not to exceed $5.0 billion. Interest on borrowings outstanding accrues at a rate based on the applicable London Interbank Offered Rate plus a spread. The 2019 credit facility requires the Company not to exceed a maximum leverage ratio (ratio of net debt to earnings before interest, taxes, depreciation and amortization, where net debt equals total debt less unrestricted cash) of 3 to 1, which was satisfied with a ratio of less than 1 to 1 at June 30, 2019. The 2019 credit facility provides back-up liquidity to fund ongoing working capital for general corporate purposes and various investment opportunities. At June 30, 2019, the Company had no amount outstanding under the credit facility. Commercial Paper Program. The Company can issue unsecured commercial paper notes (the “CP Notes”) on a private-placement basis up to a maximum aggregate amount outstanding at any time of $4.0 billion. The commercial paper program is currently supported by the 2019 credit facility. At June 30, 2019, BlackRock had no CP Notes outstanding. Long-Term Borrowings The carrying value and fair value of long-term borrowings determined using market prices and EUR/USD foreign exchange rate at June 30, 2019 included the following: (in millions) Maturity Amount Unamortized Discount and Debt Issuance Costs Carrying Value Fair Value 5.00% Notes due 2019 $ 1,000 $ — $ 1,000 $ 1,011 4.25% Notes due 2021 750 (1 ) 749 780 3.375% Notes due 2022 750 (2 ) 748 777 3.50% Notes due 2024 1,000 (5 ) 995 1,062 1.25% Notes due 2025 797 (6 ) 791 849 3.20% Notes due 2027 700 (5 ) 695 731 3.25% Notes due 2029 1,000 (14 ) 986 1,047 Total Long-term Borrowings $ 5,997 $ (33 ) $ 5,964 $ 6,257 2029 Notes . In April 2019, the Company issued $1.0 billion in aggregate principal amount of 3.25% senior unsecured and unsubordinated notes maturing on April 30, 2029 (the “2029 Notes”). Interest is payable semi-annually on April 30 and October 30 of each year, commencing October 30, 2019, and is approximately $33 million per year. The 2029 Notes may be redeemed prior to January 30, 2029 in whole or in part at any time, at the option of the Company, at a “make-whole” redemption price or at par thereafter. The unamortized discount and debt issuance costs are being amortized over the remaining term of the 2029 Notes. See Note 13, Borrowings

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2019
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	14. Commitments and Contingencies Investment Commitments. At June 30, 2019, the Company had $605 million of various capital commitments to fund sponsored investment funds, including consolidated VIEs. These funds include private equity funds, real assets funds and opportunistic funds. This amount excludes additional commitments made by consolidated funds of funds to underlying third-party funds as third-party noncontrolling interest holders have the legal obligation to fund the respective commitments of such funds of funds. Generally, the timing of the funding of these commitments is unknown and the commitments are callable on demand at any time prior to the expiration of the commitment. These unfunded commitments are not recorded on the condensed consolidated statements of financial condition. These commitments do not include potential future commitments approved by the Company that are not yet legally binding. The Company intends to make additional capital commitments from time to time to fund additional investment products for, and with, its clients. Lease Commitment. As of June 30, 2019, there were no material changes to the lease commitments as reported in the 2018 Form 10-K. At December 31, 2018, future minimum commitments under the operating leases were as follows: (in millions) Year Amount 2019 $ 145 2020 139 2021 130 2022 121 2023 106 Thereafter 1,516 Total $ 2,157 In May 2017, the Company entered into an agreement with 50 HYMC Owner LLC, for the lease of approximately 847,000 square feet of office space located at 50 Hudson Yards, New York, New York. The term of the lease is twenty years from the date that rental payments begin, expected to occur in May 2023, with the option to renew for a specified term. The lease requires annual base rental payments of approximately $51 million per year during the first five years of the lease term, increasing every five years to $58 million, $66 million and $74 million per year (or approximately $1.2 billion in base rent over its twenty-year term). Contingencies Contingent Payments Related to Business Acquisitions . In connection with certain acquisitions, BlackRock is required to make contingent payments, subject to achieving specified performance targets, which may include revenue related to acquired contracts or new capital commitments for certain products. The fair value of the remaining aggregate contingent payments at June 30, 2019 totaled $168 million and is included in other liabilities on the condensed consolidated statements of financial condition. Other Contingent Payments. The Company acts as the portfolio manager in a derivative transaction and has a maximum potential exposure of $17 million between the Company and counterparty. See Note 9, , for further discussion. Legal Proceedings. From time to time, BlackRock receives subpoenas or other requests for information from various US federal, state governmental and regulatory authorities and international governmental and regulatory authorities in connection with industry-wide or other investigations or proceedings. It is BlackRock’s policy to cooperate fully with such inquiries. The Company, certain of its subsidiaries and employees have been named as defendants in various legal actions, including arbitrations and other litigation arising in connection with BlackRock’s activities. Additionally, BlackRock-advised investment portfolios may be subject to lawsuits, any of which potentially could harm the investment returns of the applicable portfolio or result in the Company being liable to the portfolios for any resulting damages. On May 27, 2014, certain investors in the BlackRock Global Allocation Fund, Inc. and the BlackRock Equity Dividend Fund (collectively, the “Funds”) filed a consolidated complaint (the “Consolidated Complaint”) in the US District Court for the District of New Jersey against BlackRock Advisors, LLC, BlackRock Investment Management, LLC and BlackRock International Limited under the caption In re BlackRock Mutual Funds Advisory Fee Litigation . In the lawsuit, which purports to be brought derivatively on behalf of the Funds, the plaintiffs allege that the defendants violated Section 36(b) of the Investment Company Act by receiving allegedly excessive investment advisory fees from the Funds. On June 13, 2018, the court granted in part and denied in part the defendants’ motion for summary judgment. On July 25, 2018, the plaintiffs served a pleading that supplemented the time period of their alleged damages to run through the date of trial. The lawsuit seeks, among other things, to recover on behalf of the Funds all allegedly excessive advisory fees received by the defendants beginning twelve months preceding the start of the lawsuit with respect to each Fund and ending on the date of judgment, along with purported lost investment returns on those amounts, plus interest. The defendants believe the claims in this lawsuit are without merit. The trial on the remaining issues was completed on August 29, 2018. On February 8, 2019, the court issued an order dismissing the claims in their entirety. The plaintiffs filed a notice of appeal on March 8, 2019, which remains pending . On June 16, 2016, iShares iShares iShares On April 5, 2017, BlackRock, Inc., BlackRock Institutional Trust Company, N.A. (“BTC”), the BlackRock, Inc. Retirement Committee and various sub-committees, and a BlackRock employee were named as defendants in a purported class action lawsuit brought in the US District Court for the Northern District of California by a former employee on behalf of all participants and beneficiaries in the BlackRock employee 401(k) Plan (the “Plan”) from April 5, 2011 to the present. The lawsuit generally alleges that the defendants breached their duties towards Plan participants in violation of the Employee Retirement Income Security Act of 1974 by, among other things, offering investment options that were overly expensive, underperformed peer funds, focused disproportionately on active versus passive strategies, and were unduly concentrated in investment options managed by BlackRock. On October 18, 2017, the plaintiffs filed an Amended Complaint, which, among other things, added as defendants certain current and former members of the BlackRock Retirement and Investment Committees. The Amended Complaint also included a new purported class claim on behalf of investors in certain Collective Trust Funds (“CTFs”) managed by BTC. Specifically, the plaintiffs allege that BTC, as fiduciary to the CTFs, engaged in self-dealing by, most significantly, selecting itself as the securities lending agent on terms that the plaintiffs claim were excessive. The Amended Complaint also alleged that BlackRock took undue risks in its management of securities lending cash reinvestment vehicles during the financial crisis. On August 23, 2018, the court granted permission to the plaintiffs to file a Second Amended Complaint (“SAC”) which added as defendants the BlackRock, Inc. Management Development and Compensation Committee, the Plan’s independent investment consultant and the Plan’s Administrative Committee and its members. On October 22, 2018, BlackRock filed a motion to dismiss the SAC, and on June 3, 2019, the plaintiffs filed a motion seeking to certify both the Plan and the CTF classes. Both motions are pending. The defendants believe the claims in this lawsuit are without merit. Management, after consultation with legal counsel, currently does not anticipate that the aggregate liability arising out of regulatory matters or lawsuits will have a material effect on BlackRock’s results of operations, financial position, or cash flows. However, there is no assurance as to whether any such pending or threatened matters will have a material effect on BlackRock’s results of operations, financial position or cash flows in any future reporting period. Due to uncertainties surrounding the outcome of these matters, management cannot reasonably estimate the possible loss or range of loss that may arise from these matters. Indemnifications. In the ordinary course of business or in connection with certain acquisition agreements, BlackRock enters into contracts pursuant to which it may agree to indemnify third parties in certain circumstances. The terms of these indemnities vary from contract to contract and the amount of indemnification liability, if any, cannot be determined or the likelihood of any liability is considered remote. Consequently, no liability has been recorded on the condensed consolidated statements of financial condition. In connection with securities lending transactions, BlackRock has issued certain indemnifications to certain securities lending clients against potential loss resulting from a borrower’s failure to fulfill its obligations under the securities lending agreement should the value of the collateral pledged by the borrower at the time of default be insufficient to cover the borrower’s obligation under the securities lending agreement. At June 30, 2019, the Company indemnified certain of its clients for their securities lending loan balances of approximately $205 billion. The Company held, as agent, cash and securities totaling $219 billion as collateral for indemnified securities on loan at June 30, 2019. The fair value of these indemnifications was not material at June 30, 2019.

Revenue

Revenue	6 Months Ended
	Jun. 30, 2019
Revenue From Contract With Customer [Abstract]
Revenue	15. Revenue The table below presents detail of revenue for the three and six months ended June 30, 2019 and 2018. See Note 2, Significant Accounting Policies Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 Investment advisory, administration fees and securities lending revenue: Equity: Active $ 385 $ 426 $ 760 $ 864 iShares ETFs 870 911 1,717 1,837 Non-ETF Index 163 187 327 363 Equity subtotal 1,418 1,524 2,804 3,064 Fixed income: Active 474 458 931 914 iShares ETFs 234 207 454 415 Non-ETF Index 98 101 195 194 Fixed income subtotal 806 766 1,580 1,523 Multi-asset 288 295 564 591 Alternatives: Illiquid alternatives 118 83 228 160 Liquid alternatives 102 93 196 194 Currency and commodities (1) 24 26 48 51 Alternatives subtotal 244 202 472 405 Long-term 2,756 2,787 5,420 5,583 Cash management 147 157 288 308 Total base fees 2,903 2,944 5,708 5,891 Investment advisory performance fees: Equity 4 43 4 61 Fixed income — (1 ) 2 2 Multi-asset 6 9 6 14 Alternatives: Illiquid alternatives 15 2 35 2 Liquid alternatives 39 38 43 82 Alternatives subtotal 54 40 78 84 Total performance fees 64 91 90 161 Technology services revenue 237 198 441 382 Distribution fees: Retrocessions 164 181 325 373 12b-1 fees (US mutual funds distribution fees) 88 103 177 211 Other 15 10 27 21 Total distribution fees 267 294 529 605 Advisory and other revenue: Advisory 22 33 41 54 Other 31 45 61 95 Total advisory and other revenue 53 78 102 149 Total revenue $ 3,524 $ 3,605 $ 6,870 $ 7,188 _____________________________________________________________ (1) iShares The tables below present the investment advisory, administration fees and securities lending revenue by client type and investment style, respectively: Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 By client type: Retail $ 846 $ 858 $ 1,672 $ 1,713 iShares ETFs 1,128 1,143 2,219 2,301 Institutional: Active 537 511 1,037 1,038 Index 245 275 492 531 Total institutional 782 786 1,529 1,569 Long-term 2,756 2,787 5,420 5,583 Cash management 147 157 288 308 Total $ 2,903 $ 2,944 $ 5,708 $ 5,891 By investment style: Active $ 1,365 $ 1,352 $ 2,672 $ 2,717 Index and iShares 1,391 1,435 2,748 2,866 Long-term 2,756 2,787 5,420 5,583 Cash management 147 157 288 308 Total $ 2,903 $ 2,944 $ 5,708 $ 5,891 I nvestment advisory and administration fees – remaining performance obligation The tables below present estimated investment advisory and administration fees expected to be recognized in the future related to the unsatisfied portion of the performance obligations at June 30, 2019 and 2018: June 30, 2019 Remainder of (in millions) 2019 2020 2021 2022 Thereafter Total Investment advisory and administration fees: Alternatives (1)(2) $ 41 $ 74 $ 62 $ 53 $ 50 $ 280 (1) (2) June 30, 2018 Remainder of (in millions) 2018 2019 2020 2021 Thereafter Total Investment advisory and administration fees: Alternatives (1)(2) $ 43 $ 75 $ 64 $ 52 $ 52 $ 286 (1) (2) Change in Deferred Carried Interest Liability The table below presents changes in the deferred carried interest liability (including the portion related to consolidated VIEs), which is included in other liabilities/other liabilities of consolidated VIEs on the condensed consolidated statements of financial condition, for the three and six months ended June 30, 2019 and 2018: Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 Beginning balance $ 327 $ 224 $ 293 $ 219 Net increase (decrease) in unrealized allocations 48 22 99 27 Performance fee revenue recognized (10 ) (4 ) (27 ) (4 ) Ending balance $ 365 $ 242 $ 365 $ 242 Technology services revenue – remaining performance obligation The tables below present estimated technology services revenue expected to be recognized in the future related to the unsatisfied portion of the performance obligations at June 30, 2019 and 2018: June 30, 2019 Remainder of (in millions) 2019 2020 2021 2022 Thereafter Total Technology services revenue (1)(2) $ 60 $ 47 $ 33 $ 19 $ 12 $ 171 (1) (2) June 30, 2018 Remainder of (in millions) 2018 2019 2020 2021 Thereafter Total Technology services revenue (1)(2) $ 15 $ 27 $ 23 $ 17 $ 14 $ 96 (1) (2) In addition to amounts disclosed in the tables above, certain technology services contracts require fixed minimum fees, which are billed on a monthly or quarterly basis in arrears. The Company recognizes such revenue as services are performed. As of June 30, 2019, the estimated fixed minimum fees for the remainder of 2019 for currently outstanding contracts approximated $303 million. As of June 30, 2018, the estimated fixed minimum fees for the remainder of 2018 for currently outstanding contracts approximated $258 million. The term for these contracts, which are either in their initial or renewal period, ranges from one to five years. The table below presents changes in the technology services deferred revenue liability, which is included in other liabilities on the condensed consolidated statements of financial condition, for the three and six months ended June 30, 2019 and 2018: Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 Beginning balance $ 73 $ 66 $ 70 $ 62 Acquisition, net of revenue recognized (1) 24 — 24 — Additions 12 8 23 20 Revenue recognized that was included in the beginning balance (9 ) (10 ) (17 ) (18 ) Ending balance $ 100 $ 64 $ 100 $ 64 (1) Acquisition

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	16. Stock-Based Compensation Restricted Stock and RSUs. Restricted stock and restricted stock units (“RSUs”) activity for the six months ended June 30, 2019 is summarized below. Outstanding at Restricted Stock and RSUs Weighted- Average Grant Date Fair Value December 31, 2018 2,139,890 $ 429.19 Granted 1,166,382 $ 413.22 Converted (954,315 ) $ 375.09 Forfeited (49,190 ) $ 420.81 June 30, 2019 (1) 2,302,767 $ 443.70 (1) At June 30, 2019, approximately 2.2 million awards are expected to vest and 0.1 million awards have vested but have not been converted. In January 2019, the Company granted 674,206 RSUs or shares of restricted stock to employees as part of 2018 annual incentive compensation that vest ratably over three years from the date of grant and 377,291 RSUs or shares of restricted stock to employees that cliff vest 100% on January 31, 2022. The Company values restricted stock and RSUs at their grant-date fair value as measured by BlackRock’s common stock price. The total fair market value of RSUs/restricted stock granted to employees during the six months ended June 30, 2019 was $482 million. At June 30, 2019, the intrinsic value of outstanding RSUs was $1.1 billion, reflecting a closing stock price of $469.30. At June 30, 2019, total unrecognized stock-based compensation expense related to unvested RSUs was $512 million. The unrecognized compensation cost is expected to be recognized over the remaining weighted-average period of 1.5 years. Performance-Based RSUs. Performance-based RSU activity for the six months ended June 30, 2019 is summarized below. Outstanding at Performance- Based RSUs Weighted- Average Grant Date Fair Value December 31, 2018 845,285 $ 386.13 Granted 283,014 $ 410.32 Additional shares granted due to attainment of performance measures 2,117 $ 296.57 Converted (360,927 ) $ 296.57 Forfeited (11,024 ) $ 456.66 June 30, 2019 758,465 $ 436.50 In January 2019, the Company granted 283,014 performance-based RSUs to certain employees that cliff vest 100% on January 31, 2022. These awards are amortized over a service period of three years. The number of shares distributed at vesting could be higher or lower than the original grant based on the level of attainment of predetermined Company performance measures. In January 2019, the Company granted 2,117 additional RSUs to certain employees based on the attainment of Company performance measures during the performance period. The Company initially values performance-based RSUs at their grant-date fair value as measured by BlackRock’s common stock price. The total grant-date fair market value of performance-based RSUs granted to employees during the six months ended June 30, 2019 was $117 million. At June 30, 2019, the intrinsic value of outstanding performance-based RSUs was $356 million, reflecting a closing stock price of $469.30. At June 30, 2019, total unrecognized stock-based compensation expense related to unvested performance-based awards was $161 million. The unrecognized compensation cost is expected to be recognized over the remaining weighted-average period 1.6 years. See Note 16, Stock-Based Compensation, Long-Term Incentive Plans Funded by PNC. Under a share surrender agreement, PNC committed to provide up to 4 million shares of BlackRock stock, held by PNC, to fund certain BlackRock long-term incentive plans, including performance-based and market performance-based RSUs. The share surrender agreement commits PNC to provide BlackRock Series C nonvoting participating preferred stock to fund the remaining committed shares. On January 31, 2019, PNC surrendered its remaining 143,458 shares to BlackRock and has completed its share delivery obligation in connection with the agreement. Performance-based Stock Options. Stock options outstanding at both June 30, 2019 and December 31, 2018 were 2,106,482 with a weighted average exercise price of $513.50. At June 30, 2019, total unrecognized stock-based compensation expense related to unvested performance-based stock options was $148 million. The unrecognized compensation cost is expected to be recognized over the remaining weighted-average period of 4.4 years. See Note 16, Stock-Based Compensation,

Net Capital Requirements

Net Capital Requirements	6 Months Ended
	Jun. 30, 2019
Regulatory Capital Requirements [Abstract]
Net Capital Requirements	17. Net Capital Requirements The Company is required to maintain net capital in certain regulated subsidiaries within a number of jurisdictions, which is partially maintained by retaining cash and cash equivalent investments in those subsidiaries or jurisdictions. As a result, such subsidiaries of the Company may be restricted in their ability to transfer cash between different jurisdictions and to their parents. Additionally, transfers of cash between international jurisdictions may have adverse tax consequences that could discourage such transfers. At June 30, 2019, the Company was required to maintain approximately $1.8 billion in net capital in certain regulated subsidiaries, including BlackRock Institutional Trust Company, N.A. (a wholly owned subsidiary of the Company that is chartered as a national bank whose powers are limited to trust and other fiduciary activities and which is subject to regulatory capital requirements administered by the Office of the Comptroller of the Currency), entities regulated by the Financial Conduct Authority and Prudential Regulation Authority in the United Kingdom, and the Company’s broker-dealers. The Company was in compliance with all applicable regulatory net capital requirements.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	18. Accumulated Other Comprehensive Income (Loss) The following table presents changes in accumulated other comprehensive income (loss) for the three and six months ended June 30, 2019 and 2018: Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 Beginning balance $ (623 ) $ (301 ) $ (691 ) $ (432 ) Foreign currency translation adjustments (1) (41 ) (274 ) 27 (137 ) Reclassification as a result of adoption of accounting guidance — — — (6 ) Ending balance $ (664 ) $ (575 ) $ (664 ) $ (575 ) (1) Amounts for the three months ended June 30, 2019 and 2018 include a loss from a net investment hedge of $8 million (net of tax benefit of $2 million) and a gain of $34 million (net of tax of $11 million), respectively. Amounts for the six months ended June 30, 2019 and 2018 include gains from a net investment hedge of $3 million (net of tax of $1 million) and $18 million (net of tax of $6 million), respectively.

Capital Stock

Capital Stock	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Capital Stock	19. Capital Stock Nonvoting Participating Preferred Stock . The Company’s preferred shares authorized, issued and outstanding consisted of the following: June 30, December 31, 2019 2018 Series A Shares authorized, $0.01 par value 20,000,000 20,000,000 Shares issued and outstanding — — Series B Shares authorized, $0.01 par value 150,000,000 150,000,000 Shares issued and outstanding (1) 823,188 823,188 Series C Shares authorized, $0.01 par value 6,000,000 6,000,000 Shares issued and outstanding (1) — 143,458 Series D Shares authorized, $0.01 par value 20,000,000 20,000,000 Shares issued and outstanding — — (1) Shares held by PNC. Share Repurchases . During the six months ended June 30, 2019, the Company repurchased 3.8 million common shares under the share repurchase program for approximately $1.6 billion, including a $1.3 billion private transaction that closed on March 25, 2019. At June 30, 2019, there were 6.1 million shares still authorized to be repurchased. PNC Capital Contribution . On January 31, 2019, PNC surrendered to BlackRock its remaining 143,458 of BlackRock Series C Preferred shares and has completed its share delivery obligation in connection with its share surrender agreement.

Restructuring

Restructuring	6 Months Ended
	Jun. 30, 2019
Restructuring And Related Activities [Abstract]
Restructuring	20. Restructuring A restructuring charge of $60 million ($47 million after-tax), comprised of $53 million of severance and $7 million of expense related to the accelerated amortization of previously granted equity compensation awards, was recorded in the fourth quarter of 2018 in connection with an initiative to modify the size and shape of the workforce. The table below presents a rollforward of the Company’s restructuring liability, which is included in other liabilities on the condensed consolidated statements of financial condition, for the six months ended June 30, 2019: Six Months Ended (in millions) June 30, 2019 Liability as of December 31, 2018 $ 53 Cash payments (42 ) Liability as of June 30, 2019 $ 11

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	21. Income Taxes The six months ended June 30, 2019 and 2018 income tax expense included $22 million and $58 million, respectively, of discrete tax benefits related to stock-based compensation awards that vested in the first quarter of each respective year.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share	22. Earnings Per Share Due to the similarities in terms between BlackRock nonvoting participating preferred stock and the Company’s common stock, the Company considers its participating preferred stock to be a common stock equivalent for purposes of earnings per share (“EPS”) calculations. As such, the Company has included the outstanding nonvoting participating preferred stock in the calculation of average basic and diluted shares outstanding. The following table sets forth the computation of basic and diluted EPS for the three and six months ended June 30, 2019 and 2018 under the treasury stock method: Three Months Ended Six Months Ended June 30, June 30, (in millions, except shares and per share data) 2019 2018 2019 2018 Net income attributable to BlackRock $ 1,003 $ 1,073 $ 2,056 $ 2,162 Basic weighted-average shares outstanding 155,354,552 160,980,960 156,803,244 161,114,746 Dilutive effect of nonparticipating RSUs and stock options 1,006,189 1,180,977 1,050,467 1,417,891 Total diluted weighted-average shares outstanding 156,360,741 162,161,937 157,853,711 162,532,637 Basic earnings per share $ 6.46 $ 6.67 $ 13.11 $ 13.42 Diluted earnings per share $ 6.41 $ 6.62 $ 13.02 $ 13.30

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Segment Information	23. Segment Information The Company’s management directs BlackRock’s operations as one business, the asset management business. The Company utilizes a consolidated approach to assess performance and allocate resources. As such, the Company operates in one business segment. The following table illustrates total revenue for the three and six months ended June 30, 2019 and 2018 by geographic region. These amounts are aggregated on a legal entity basis and do not necessarily reflect where the customer resides or affiliated services are provided. Three Months Ended Six Months Ended (in millions) June 30, June 30, Revenue 2019 2018 2019 2018 Americas $ 2,366 $ 2,337 $ 4,606 $ 4,661 Europe 995 1,082 1,938 2,175 Asia-Pacific 163 186 326 352 Total revenue $ 3,524 $ 3,605 $ 6,870 $ 7,188 See Note 15, Revenue The following table illustrates long-lived assets that consist of goodwill and property and equipment at June 30, 2019 and December 31, 2018 by geographic region. These amounts are aggregated on a legal entity basis and do not necessarily reflect where the asset is physically located. (in millions) June 30, December 31, Long-lived Assets 2019 2018 Americas $ 13,791 $ 13,780 Europe 1,292 303 Asia-Pacific 87 86 Total long-lived assets $ 15,170 $ 14,169 Americas is primarily comprised of the United States, Latin America and Canada, while Europe is primarily comprised of the United Kingdom, the Netherlands and Luxembourg. Asia-Pacific is primarily comprised of Hong Kong, Australia, Japan and Singapore.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	24. Subsequent Events The Company continues to strategically invest in illiquid alternatives to drive future growth. On August 5, 2019, the Company adopted a carried interest retention incentive program referred to as the BlackRock Leadership Retention Carry Plan (the “Plan”), pursuant to which senior-level employees (but not including the Chief Executive Officer), as may be determined by the Company from time to time, will be eligible to receive a portion of the cash payments, based on their percentage points, in the total carried interest distributions payable to the Company from participating carry funds. Participating carry funds shall consist of BlackRock carry vehicles that (i) had an initial close during the period commencing in the year of grant and ending on the participant’s termination and (ii) are listed in the award documentation. Carried interest generally represents the right to receive distributions only if (i) distributions are made to investors in the participating carry funds following the realization of an investment and (ii) a specified return is achieved with respect to such investments. Consequently, the actual amount of any potential carried interest distribution received by the Company, and the participants in the Plan, is solely a function of the performance of the eligible carry fund and the realization of its underlying investments. The Plan is not expected to have a material financial impact on the Company. Cash payments, if any, with respect to these percentage points will be made following the recipient’s termination of employment due to qualified retirement, death or disability, subject to his or her execution of a release of claims and continued compliance with his or her restrictive covenant obligations following termination. Any payments received under the Plan will be treated as ordinary income and not long term capital gains. The foregoing summary does not purport to be complete and is qualified in its entirety by reference to the full text of the BlackRock Leadership Retention Carry Plan and the Form of Percentage Points Award Agreement under the BlackRock Leadership Retention Carry Plan, which are filed as Exhibits 10.1 and 10.2, respectively, to this Periodic Report on Form 10-Q and incorporated herein by reference. The Company conducted a review for additional subsequent events and determined that no subsequent events had occurred that would require accrual or additional disclosures.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation These condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and include the accounts of the Company and its controlled subsidiaries. Noncontrolling interests (“NCI”) on the condensed consolidated statements of financial condition represents the portion of consolidated sponsored investment funds in which the Company does not have direct equity ownership. Accounts and transactions between consolidated entities have been eliminated. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting periods. Actual results could differ from those estimates. Certain financial information that normally is included in annual financial statements, including certain financial statement footnotes, is not required for interim reporting purposes and has been condensed or omitted herein. These condensed consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and notes related thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018, which was filed with the Securities and Exchange Commission (“SEC”) on February 28, 2019 (“2018 Form 10-K”). The interim financial information at June 30, 2019 and for the three and six months ended June 30, 2019 and 2018 is unaudited. However, in the opinion of management, the interim information includes all normal recurring adjustments necessary for the fair presentation of the Company’s results for the periods presented. The results of operations for interim periods are not necessarily indicative of results to be expected for the full year. Certain prior period presentations and disclosures were reclassified to ensure comparability with current period classifications.
Accounting Pronouncements Adopted in the Six Months Ended June 30, 2019	Accounting Pronouncements Adopted in the Six Months Ended June 30, 2019 Leases . In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, , and several amendments (collectively, “ASU 2016-02”), which requires lessees to recognize assets and liabilities arising from most operating leases on the condensed consolidated statements of financial condition. The Company adopted ASU 2016-02 on its effective date of January 1, 2019 on a modified retrospective basis and elected not to apply ASU 2016-02 to the comparative periods presented. Under this transition method, any cumulative effect adjustment is recognized in the opening balance of retained earnings in the period of adoption. The Company elected the package of practical expedients to alleviate certain operational complexities related to the adoption, which among other things, allowed the Company to carry forward the existing lease classification. The Company elected to account for lease and non-lease components as a single component for its leases. The Company also elected the short-term lease practical expedient for its leases. Consequently, leases with an initial term of 12 months or less are not recorded on the condensed consolidated statement of financial condition. Upon adoption of ASU 2016-02, the Company recorded a net increase of approximately $0.7 billion in its assets and liabilities related to the right-of-use (“ROU”) asset and lease liability for its operating leases. The adoption of ASU 2016-02 did not have a material impact on the condensed consolidated statement of income or cash flows. See Note 10, Leases
Fair Value Measurements	Fair Value Measurements Hierarchy of Fair Value Inputs. The Company uses a fair value hierarchy that prioritizes inputs to valuation approaches used to measure fair value. The fair value hierarchy gives the highest priority to quoted prices (unadjusted) in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. Assets and liabilities measured and reported at fair value are classified and disclosed in one of the following categories: Level 1 Inputs: Quoted prices (unadjusted) in active markets for identical assets or liabilities at the reporting date. • Level 1 assets may include listed mutual funds, ETFs, listed equities and certain exchange-traded derivatives. Level 2 Inputs: Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities that are not active; quotes from pricing services or brokers for which the Company can determine that orderly transactions took place at the quoted price or that the inputs used to arrive at the price are observable; and inputs other than quoted prices that are observable, such as models or other valuation methodologies. • Level 2 assets may include debt securities, investments in collateralized loan obligations (“CLOs”), bank loans, short-term floating-rate notes, asset-backed securities, securities held within consolidated hedge funds, restricted public securities valued at a discount, as well as over-the-counter derivatives, including interest and inflation rate swaps and foreign currency exchange contracts that have inputs to the valuations that generally can be corroborated by observable market data. Level 3 Inputs: Unobservable inputs for the valuation of the asset or liability, which may include nonbinding broker quotes. Level 3 assets include investments for which there is little, if any, market activity. These inputs require significant management judgment or estimation. • Level 3 assets may include direct private equity investments held within consolidated funds, investments in CLOs and bank loans of consolidated CLOs. • Level 3 liabilities include contingent liabilities related to acquisitions valued based upon discounted cash flow analyses using unobservable market data and borrowings of consolidated CLOs. Significance of Inputs. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the financial instrument. Valuation Approaches. The fair values of certain Level 3 assets and liabilities were determined using various valuation approaches as appropriate, including third-party pricing vendors, broker quotes and market and income approaches. A significant number of inputs used to value equity, debt securities, investments in CLOs and bank loans is sourced from third-party pricing vendors. Generally, prices obtained from pricing vendors are categorized as Level 1 inputs for identical securities traded in active markets and as Level 2 for other similar securities if the vendor uses observable inputs in determining the price. In addition, quotes obtained from brokers generally are nonbinding and categorized as Level 3 inputs. However, if the Company is able to determine that market participants have transacted for the asset in an orderly manner near the quoted price or if the Company can determine that the inputs used by the broker are observable, the quote is classified as a Level 2 input. Investments Measured at Net Asset Values. As a practical expedient, the Company uses net asset value (“NAV”) as the fair value for certain investments. The inputs to value these investments may include the Company’s capital accounts for its partnership interests in various alternative investments, including hedge funds, real assets and private equity funds, which may be adjusted by using the returns of certain market indices. The various partnerships generally are investment companies, which record their underlying investments at fair value based on fair value policies established by management of the underlying fund. Fair value policies at the underlying fund generally require the fund to utilize pricing/valuation information from third-party sources, including independent appraisals. However, in some instances, current valuation information for illiquid securities or securities in markets that are not active may not be available from any third-party source or fund management may conclude that the valuations that are available from third-party sources are not reliable. In these instances, fund management may perform model-based analytical valuations that could be used as an input to value these investments. Fair Value of Assets and Liabilities of Consolidated CLO. The Company applies the fair value option provisions for eligible assets, including bank loans, held by consolidated CLOs. As the fair value of the financial assets of the consolidated CLO is more observable than the fair value of the borrowings of the consolidated CLO, the Company measures the fair value of the borrowings of the consolidated CLO as the fair value of the assets of the consolidated CLO less the fair value of the Company’s economic interest in the CLO.
Derivative Instruments and Hedging Activities	Derivatives and Hedging Activities . The Company does not use derivative financial instruments for trading or speculative purposes. The Company uses derivative financial instruments primarily for purposes of hedging exposures to fluctuations in foreign currency exchange rates of certain assets and liabilities, and market exposures for certain seed investments. However, certain consolidated sponsored investment funds may also utilize derivatives as a part of their investment strategy. Changes in the fair value of the Company’s derivative financial instruments are recognized in earnings and, where applicable, are offset by the corresponding gain or loss on the related foreign-denominated assets or liabilities or hedged investments, on the condensed consolidated statements of income. The Company may also use financial instruments designated as net investment hedges for accounting purposes to hedge net investments in international subsidiaries whose functional currency is not US dollars. The gain or loss from revaluing accounting hedges of net investments in foreign operations at the spot rate is deferred and reported within accumulated other comprehensive income (loss) on the condensed consolidated statements of financial condition. Amounts excluded from the effectiveness assessment are reported in the condensed consolidated statements of income using a systematic and rational method. The Company reassesses the effectiveness of its net investment hedges at least quarterly.
Leases	Leases . The Company determines if a contract is a lease or contains a lease at inception. The Company accounts for its office facility leases as operating leases, which may include escalation clauses that are based on an index or market rate. The Company accounts for lease and non-lease components as a single component for its leases. The Company elected the short-term lease exception for l eases with an initial term of 12 months or less. Consequently, such leases are not recorded on the condensed consolidated statement of financial condition. The Company’s lease terms include options to extend or terminate the lease when it is reasonably certain they will be exercised or not, respectively. Fixed lease payments are included in ROU assets and lease liabilities within other assets and other liabilities, respectively, on the condensed consolidated statement of financial condition. Upon adoption of ASU 2016-02, for existing leases, the Company elected to determine the discount rate based on the remaining lease term as of January 1, 2019 and for lease payments based on an index or rate to apply the rate at commencement date. For new leases, the discount rates are based on the entire noncancelable lease term.
Separate Account Assets And Liabilities	Separate Account Assets and Liabilities . Separate account assets are maintained by BlackRock Life Limited, a wholly owned subsidiary of the Company, which is a registered life insurance company in the United Kingdom, and represent segregated assets held for purposes of funding individual and group pension contracts. The life insurance company does not underwrite any insurance contracts that involve any insurance risk transfer from the insured to the life insurance company. The separate account assets primarily include equity securities, debt securities, money market funds and derivatives. The separate account assets are not subject to general claims of the creditors of BlackRock. These separate account assets and the related equal and offsetting liabilities are recorded as separate account assets and separate account liabilities on the condensed consolidated statements of financial condition. The net investment income attributable to separate account assets supporting individual and group pension contracts accrues directly to the contract owner and is not reported on the condensed consolidated statements of income. While BlackRock has no economic interest in these separate account assets and liabilities, BlackRock earns policy administration and management fees associated with these products, which are included in investment advisory, administration fees and securities lending revenue on the condensed consolidated statements of income.
Separate Account Collateral Assets Held and Liabilities Under Securities Lending Agreements	Separate Account Collateral Assets Held and Liabilities Under Securities Lending Agreements. The Company facilitates securities lending arrangements whereby securities held by separate accounts maintained by BlackRock Life Limited are lent to third parties under global master securities lending agreements. In exchange, the Company receives legal title to the collateral with minimum values generally ranging from approximately 102% to 112% of the value of the securities lent in order to reduce counterparty risk. The required collateral value is calculated on a daily basis. The global master securities lending agreements provide the Company the right to request additional collateral or, in the event of borrower default, the right to liquidate collateral. The securities lending transactions entered into by the Company are accompanied by an agreement that entitles the Company to request the borrower to return the securities at any time; therefore, these transactions are not reported as sales. The Company records on the condensed consolidated statements of financial condition the cash and noncash collateral received under these BlackRock Life Limited securities lending arrangements as its own asset in addition to an equal and offsetting collateral liability for the obligation to return the collateral. The securities lending revenue earned from lending securities held by the separate accounts is included in investment advisory, administration fees and securities lending revenue on the condensed consolidated statements of income. During the six months ended June 30, 2019 and 2018, the Company had not resold or repledged any of the collateral received under these arrangements. At June 30, 2019 and December 31, 2018, the fair value of loaned securities held by separate accounts was approximately $17.0 billion and $18.9 billion, respectively, and the fair value of the collateral held under these securities lending agreements was approximately $18.4 billion and $20.7 billion, respectively.

Acquisition (Tables)

Acquisition (Tables)	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Summary of Fair Values of Assets Acquired and Liabilities Assumed	A summary of the recorded fair values of the assets acquired and liabilities assumed in this acquisition is as follows (1) Estimate of (in millions) Fair Value Accounts receivable $ 65 Finite-lived intangible assets: Customer relationships (2) 452 Technology-related (3) 205 Trade name (4) 21 Goodwill 990 Other assets 31 Deferred income tax liabilities (194 ) Other liabilities assumed (64 ) Total consideration, net of cash acquired $ 1,506 Estimate of (in millions) Fair Value Cash paid including settlement of outstanding debt of approximately $0.2 billion $ 1,555 Cash acquired (49 ) Total consideration, net of cash acquired $ 1,506 (1) (2) (3) ( 4 )
Summary of Finite-Lived Intangible Assets Weighted-Average Remaining Useful Life	The finite-lived intangible assets had a weighted-average remaining useful life of approximately 10 years with remaining amortization expense as follows (in millions) Year Amount 2019 (excluding the six months ended June 30, 2019) $ 32 2020 60 2021 58 2022 64 2023 70 Thereafter 384 Total $ 668

Cash, Cash Equivalents and Re_2

Cash, Cash Equivalents and Restricted Cash (Tables)	6 Months Ended
	Jun. 30, 2019
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents [Abstract]
Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash	The following table provides a reconciliation of cash and cash equivalents reported within the condensed consolidated statements of financial condition to the cash, cash equivalents, and restricted cash reported within the condensed consolidated statements of cash flows. June 30, December 31, (in millions) 2019 2018 Cash and cash equivalents $ 3,920 $ 6,302 Cash and cash equivalents of consolidated VIEs 103 186 Restricted cash included in other assets 17 17 Total cash, cash equivalents and restricted cash $ 4,040 $ 6,505

Investments (Tables)

Investments (Tables)	6 Months Ended
	Jun. 30, 2019
Investments Debt And Equity Securities [Abstract]
Summary of Carrying Value of Total Investments	A summary of the carrying value of total investments is as follows: June 30, December 31, (in millions) 2019 2018 Debt securities: Held-to-maturity investments $ 213 $ 188 Trading securities (debt securities of consolidated sponsored investment funds of $143 and $233 at June 30, 2019 and December 31, 2018, respectively) 180 265 Total debt securities 393 453 Equity securities at FVTNI (1) funds of $309 and $291 at June 30, 2019 and December 31, 2018, respectively) 537 452 Equity method investments (2) 846 781 Federal Reserve Bank stock (3) 93 92 Carried interest (4) 12 18 Other investments (5) 108 — Total investments $ 1,989 $ 1,796 (1) (2) (3) (4) (5) Significant Accounting Policies
Summary of Cost and Carrying Value of Equity and Trading Debt Securities	A summary of the cost and carrying value of equity and trading debt securities is as follows: June 30, 2019 December 31, 2018 (in millions) Cost Carrying Value Cost Carrying Value Trading debt securities: Corporate debt $ 122 $ 122 $ 144 $ 140 Government debt 7 7 69 67 Asset/mortgage-backed debt 51 51 67 58 Total trading debt securities $ 180 $ 180 $ 280 $ 265 Equity securities at FVTNI: Deferred compensation plan mutual funds $ 6 $ 22 $ 21 $ 34 Equity securities/multi-asset mutual funds 473 515 420 418 Total equity securities at FVTNI $ 479 $ 537 $ 441 $ 452

Consolidated Voting Rights En_2

Consolidated Voting Rights Entities (Tables)	6 Months Ended
	Jun. 30, 2019
Text Block [Abstract]
Consolidated VREs Included in Condensed Consolidated Statements of Financial Condition	The following table presents the amounts related to these consolidated VREs that were recorded on the condensed consolidated statements of financial condition, including BlackRock’s net interest in these funds: June 30, December 31, (in millions) 2019 2018 Cash and cash equivalents $ 13 $ 59 Investments: Trading debt securities 143 233 Equity securities at FVTNI 309 291 Total investments 452 524 Other assets 7 8 Other liabilities (10 ) (53 ) NCI (44 ) (90 ) BlackRock’s net interests in consolidated VREs $ 418 $ 448

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	6 Months Ended
	Jun. 30, 2019
Consolidated Variable Interest Entities [Member]
Variable Interest Entity [Line Items]
Schedule of VIE Assets and Liabilities	Consolidated VIE assets and liabilities are presented after intercompany eliminations in the following table: June 30, December 31, (in millions) 2019 2018 Assets of consolidated VIEs: Cash and cash equivalents $ 103 $ 186 Investments: Trading debt securities 939 1,395 Equity securities at FVTNI 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
Schedule of Net Gain (Loss) Related to Consolidated VIEs	Net gain (loss) related to consolidated VIEs is presented in the following table: Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 Nonoperating net gain (loss) on consolidated VIEs $ 39 $ (14 ) $ 133 $ (12 ) Net income (loss) attributable to NCI on consolidated VIEs $ 12 $ 6 $ 17 $ 11
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Schedule of VIE Assets and Liabilities	At June 30 , 2019 and December 31, 2018 , the Company’s carrying value of assets and liabilities included on the condensed consolidated statements of financial condition pertaining to nonconsolidated VIEs and its maximum risk of loss related to VIEs for which it held a variable interest, but for which it was not the PB, was as follows: (in millions) At June 30, 2019 Investments Advisory Fee Receivables Other Net Assets (Liabilities) Maximum Risk (1) Sponsored investment products $ 492 $ 65 $ (7 ) $ 574 At December Sponsored investment products $ 348 $ 43 $ (6 ) $ 408 (1) At both June 30, 2019 and December 31, 2018, BlackRock’s maximum risk of loss associated with these VIEs primarily related to BlackRock’s investments and the collection of advisory fee receivables.

Fair Value Disclosures (Tables)

Fair Value Disclosures (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis June 30, 2019 (in millions) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Investments Measured at NAV (1) Other (2) June 30, 2019 Assets: Investments: Debt securities: Held-to-maturity securities $ — $ — $ — $ — $ 213 $ 213 Trading securities — 178 2 — — 180 Total debt securities — 178 2 — 213 393 Equity securities at FVTNI: Deferred compensation plan mutual funds 22 — — — — 22 Equity securities/Multi-asset mutual funds 515 — — — — 515 Total equity securities at FVTNI 537 — — — — 537 Equity method: Equity and fixed income mutual funds 140 — — 16 — 156 Other 42 — — 645 3 690 Total equity method 182 — — 661 3 846 Federal Reserve Bank Stock — — — — 93 93 Carried interest — — — — 12 12 Other investments (3) — — — — 108 108 Total investments 719 178 2 661 429 1,989 Investments of consolidated VIEs: Trading debt securities — 939 — — — 939 Equity securities at FVTNI 736 — — — — 736 Bank loans — 20 125 — — 145 Private equity (4) — — 9 33 78 120 Other — — — 62 — 62 Carried interest — — — — 429 429 Total investments of consolidated VIEs 736 959 134 95 507 2,431 Other assets (5) 168 — — — — 168 Separate account assets 69,029 27,001 — — 777 96,807 Separate account collateral held under securities lending agreements: Equity securities 12,113 — — — — 12,113 Debt securities — 6,333 — — — 6,333 Total separate account collateral held under securities lending agreements 12,113 6,333 — — — 18,446 Total $ 82,765 $ 34,471 $ 136 $ 756 $ 1,713 $ 119,841 Liabilities: Borrowings of consolidated VIEs (6) $ — $ — $ 142 $ — $ — $ 142 Separate account collateral liabilities under securities lending agreements 12,113 6,333 — — — 18,446 Other liabilities (7) — 7 168 — — 175 Total $ 12,113 $ 6,340 $ 310 $ — $ — $ 18,763 (1) (2) (3) (4) (5) (6) (7) Commitments and Contingencies Assets and liabilities measured at fair value on a recurring basis December 31, 2018 (in millions) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Investments Measured at NAV (1) Other (2) December 31, 2018 Assets: Investments: Debt securities: Held-to-maturity securities $ — $ — $ — $ — $ 188 $ 188 Trading securities — 261 4 — — 265 Total debt securities — 261 4 — 188 453 Equity securities at FVTNI: Deferred compensation plan mutual funds 34 — — — — 34 Equity securities/Multi-asset mutual funds 418 — — — — 418 Total equity securities at FVTNI 452 — — — — 452 Equity method: Equity and fixed income mutual funds 122 — — 14 — 136 Other — — — 642 3 645 Total equity method 122 — — 656 3 781 Federal Reserve Bank Stock — — — — 92 92 Carried interest — — — — 18 18 Total investments 574 261 4 656 301 1,796 Investments of consolidated VIEs: Trading debt securities — 1,395 — — — 1,395 Equity securities at FVTNI 569 — — — — 569 Bank loans — 14 70 — — 84 Private equity (3) — — 82 48 75 205 Other — — — 58 — 58 Carried interest — — — — 369 369 Total investments of consolidated VIEs 569 1,409 152 106 444 2,680 Other assets (4) 122 — — — — 122 Separate account assets 63,610 25,810 — — 865 90,285 Separate account collateral held under securities lending agreements: Equity securities 15,066 — — — — 15,066 Debt securities — 5,589 — — — 5,589 Total separate account collateral held under securities lending agreements 15,066 5,589 — — — 20,655 Total $ 79,941 $ 33,069 $ 156 $ 762 $ 1,610 $ 115,538 Liabilities: Borrowings of consolidated VIEs (5) $ — $ — $ 84 $ — $ — $ 84 Separate account collateral liabilities under securities lending agreements 15,066 5,589 — — — 20,655 Other liabilities (6) — 6 287 — — 293 Total $ 15,066 $ 5,595 $ 371 $ — $ — $ 21,032 (1) (2) (3) (4) (5) (6) Commitments and Contingencies
Changes in Level 3 Assets and Liabilities Measured at Fair Value on Recurring Basis	Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Three Months Ended June 30, 2019 (in millions) March 31, 2019 Realized and Unrealized Gains (Losses) Purchases Sales and Maturities Issuances and other Settlements (1) Transfers into Level 3 Transfers out of Level 3 June 30, 2019 Total Net Unrealized Gains (Losses) Included in Earnings (2) Assets: Investments: Debt securities: Trading $ — $ — $ 2 $ — $ — $ — $ — $ 2 Total investments — — 2 — — — — 2 Assets of consolidated VIEs: Bank loans (3) 123 — 2 — — — — 125 Private equity 10 (1 ) — — — — — 9 (1 ) Total Assets of consolidated VIEs 133 (1 ) 2 — — — — 134 (1 ) Total Level 3 assets $ 133 $ (1 ) $ 4 $ — $ — $ — $ — $ 136 $ (1 ) Liabilities: Borrowings of consolidated VIEs (3) $ 134 $ — $ — $ — $ 8 $ — $ — $ 142 $ — Other liabilities (4) 275 (13 ) — — (120 ) — — 168 (13 ) Total Level 3 liabilities $ 409 $ (13 ) $ — $ — $ (112 ) $ — $ — $ 310 $ (13 ) (1) (2) (3) (4) Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Six Months Ended June 30, 2019 (in millions) December 31, 2018 Realized and Unrealized Gains (Losses) Purchases Sales and Maturities Issuances and other Settlements (1) Transfers into Level 3 Transfers out of Level 3 (2) June 30, 2019 Total Net Unrealized Gains (Losses) Included in Earnings (3) Assets: Investments: Debt securities: Trading $ 4 $ — $ 2 $ — $ — $ — $ (4 ) $ 2 Total investments 4 — 2 — — — (4 ) 2 Assets of consolidated VIEs: Bank loans (4) 70 — 55 — — — — 125 Private equity 82 (1 ) — — — — (72 ) 9 (1 ) Total Assets of consolidated VIEs 152 (1 ) 55 — — — (72 ) 134 (1 ) Total Level 3 assets $ 156 $ (1 ) $ 57 $ — $ — $ — $ (76 ) $ 136 $ (1 ) Liabilities: Borrowings of consolidated VIEs (4) $ 84 $ — $ — $ — $ 58 $ — $ — $ 142 $ — Other liabilities (5) 287 (19 ) — — (138 ) — — 168 (19 ) Total Level 3 liabilities $ 371 $ (19 ) $ — $ — $ (80 ) $ — $ — $ 310 $ (19 ) (1) (2) (3) (4) (5) Amounts include contingent liabilities in connection with certain acquisitions. Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Three Months Ended June 30 , 2018 (in millions) March 31, 2018 Realized and Unrealized Gains (Losses) Purchases Sales and Maturities Issuances and other Settlements (1) Transfers into Level 3 Transfers out of Level 3 June 30, 2018 Total Net Unrealized Gains (Losses) Included in Earnings (2) Assets: Investments: Debt securities: Available-for-sale securities (3) $ 26 $ — $ — $ — $ — $ — $ (26 ) $ — Trading 5 — — — — — (5 ) — Total investments 31 — — — — — (31 ) — Assets of consolidated VIEs - Private equity 116 — — (12 ) — — — 104 Total Level 3 assets $ 147 $ — $ — $ (12 ) $ — $ — $ (31 ) $ 104 $ — Liabilities: Other liabilities (4) $ 242 $ 3 $ — $ — $ (16 ) $ — $ — $ 223 $ 3 (1) (2) (3) (4) Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Six Months Ended June 30, 2018 (in millions) December 31, 2017 Realized and Unrealized Gains (Losses) Purchases Sales and Maturities Issuances and other Settlements (1) Transfers into Level 3 Transfers out of Level 3 June 30, 2018 Total Net Unrealized Gains (Losses) Included in Earnings (2) Assets: Investments: Available-for-sale securities (3) $ — $ — $ 26 $ — $ — $ — $ (26 ) $ — Trading — — 5 — — — (5 ) — Total investments — — 31 — — — (31 ) — Assets of consolidated VIEs - Private equity 116 — — (12 ) — — — 104 Total Level 3 assets $ 116 $ — $ 31 $ (12 ) $ — $ — $ (31 ) $ 104 $ — Liabilities: Other liabilities (4) $ 236 $ (3 ) $ — $ — $ (16 ) $ — $ — $ 223 $ (3 ) (1) (2) (3) (4)
Fair Value of Financial Assets and Financial Liabilities	Disclosures of Fair Value for Financial Instruments Not Held at Fair Value . At June 30, 2019 and December 31, 2018, the fair value of the Company’s financial instruments not held at fair value are categorized in the table below: June 30, 2019 December 31, 2018 (in millions) Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Fair Value Hierarchy Financial Assets (1) Cash and cash equivalents $ 3,920 $ 3,920 $ 6,302 $ 6,302 Level 1 (2) (3) Cash and cash equivalents of consolidated VIEs $ 103 $ 103 $ 186 $ 186 Level 1 (2) (3) Other assets $ 63 $ 63 $ 18 $ 18 Level 1 (2) (4) Financial Liabilities: Long-term borrowings $ 5,964 $ 6,257 $ 4,979 $ 5,034 Level 2 (5) (1) See Note 5, Investments (2) Cash and cash equivalents are carried at either cost or amortized cost, which approximates fair value due to their short-term maturities. ( 3 ) At June 30, 2019 and December 31, 2018, approximately $371 million and $173 million, respectively, of money market funds were recorded within cash and cash equivalents on the condensed consolidated statements of financial condition. In addition, at June 30, 2019 and December 31, 2018, approximately $13 million and $7 million, respectively, of money market funds were recorded within cash and cash equivalents of consolidated VIEs. Money market funds are valued based on quoted market prices, or $1.00 per share, which generally is the NAV of the fund. ( 4 ) Other assets include restricted cash and cash collateral deposited with certain derivative counterparties. The carrying values of other assets approximates fair value, due to their short-term maturities. ( 5 ) Long-term borrowings are recorded at amortized cost net of debt issuance costs. The fair value of the long-term borrowings, including the current portion of long-term borrowings, is determined using market prices at the end of June 2019 and December 2018, respectively. See Note 13, Borrowings
Investments in Certain Entities that Calculate Net Asset Value per Share	The following tables list information regarding all investments that use a fair value measurement to account for both their financial assets and financial liabilities in their calculation of a NAV per share (or equivalent). June 30, 2019 (in millions) Ref Fair Value Total Unfunded Commitments Redemption Frequency Redemption Notice Period Equity method: (1) Hedge funds/funds of hedge funds (a) $ 188 $ 85 Daily/Monthly (27%) Quarterly (20%) N/R (53%) 1 – 90 days Private equity funds (b) 123 349 N/R N/R Real assets funds (c) 334 142 Quarterly (64%) N/R (36%) 60 days Other 16 11 Daily/Monthly (73%) N/R (27%) 3 – 5 days Consolidated VIEs: Private equity funds of funds (d) 33 11 N/R N/R Hedge fund (a) 4 — Quarterly 90 days Real assets funds (c) 58 10 N/R N/R Total $ 756 $ 608 December 31, 2018 (in millions) Ref Fair Value Total Unfunded Commitments Redemption Frequency Redemption Notice Period Equity method: (1) Hedge funds/funds of hedge funds (a) $ 173 $ 96 Daily/Monthly (30%) Quarterly (18%) N/R (52%) 1 – 90 days Private equity funds (b) 116 83 N/R N/R Real assets funds (c) 353 93 Quarterly (68%) N/R (32%) 60 days Other 14 16 Daily (80%) N/R (20%) 5 days Consolidated VIEs: Private equity funds of funds (d) 48 18 N/R N/R Hedge fund (a) 3 — Quarterly 90 days Real assets funds (c) 55 37 N/R N/R Total $ 762 $ 343 N/R – not redeemable (1) (a) The liquidation period for the investments in the funds that are not subject to redemption is unknown at both June 30, 2019 and December 31, 2018. (b) This category includes several private equity funds that initially invest in nonmarketable securities of private companies, which ultimately may become public in the future. The fair values of these investments have been estimated using capital accounts representing the Company’s ownership interest in the funds as well as other performance inputs. The Company’s investment in each fund is not subject to redemption and is normally returned through distributions as a result of the liquidation of the underlying assets of the private equity funds . The liquidation period for the investments in these funds is unknown at both June 30, 2019 and December 31, 2018. (c) This category includes several real assets funds that invest directly and indirectly in real estate or infrastructure. The fair values of the investments have been estimated using capital accounts representing the Company’s ownership interest in the funds. The Company’s investments that are not subject to redemption or are not currently redeemable are normally returned through distributions and realizations of the underlying assets of the funds . The liquidation periods for the investments in the funds that are not subject to redemptions is unknown at both June 30 , 201 9 and December 31, 201 8 . The total remaining unfunded commitments to real assets funds were $ 152 million and $ million at June 30 , 201 9 and December 31, 201 8 , respectively. The Company had contractual obligations to the real assets funds of $ 145 million at June 30 , 201 9 and $ 117 million at December 31, 201 8 . (d) This category includes the underlying third-party private equity funds within consolidated BlackRock sponsored private equity funds of funds. The fair values of the investments in the third-party funds have been estimated using capital accounts representing the Company’s ownership interest in each fund in the portfolio as well as other performance inputs. These investments are not subject to redemption or are not currently redeemable; however, for certain funds, the Company may sell or transfer its interest, which may need approval by the general partner of the underlying funds. Due to the nature of the investments in this category, the Company reduces its investment by distributions that are received through the realization of the underlying assets of the funds. The liquidation period for the underlying assets of these funds is unknown at both June 30, 2019 and December 31, 2018. The total remaining unfunded commitments to other third-party funds were $11 million and $18 million at June 30, 2019 and December 31, 2018, respectively. The Company had contractual obligations to the consolidated funds of $22 million at both June 30, 2019 and December 31, 2018.
Summary of Information Related to Assets and Liabilities of Consolidated CLO for which Fair Value Option was Elected	The following table summarizes information related to assets and liabilities of a consolidated CLO, recorded within investments and borrowings of consolidated VIEs, respectively, for which the fair value option was elected: June 30, December 31, (in millions) 2019 2018 CLO Bank loans: Aggregate principal amounts outstanding $ 145 $ 84 Fair value 145 84 Aggregate unpaid principal balance in excess of (less than) fair value $ — $ — CLO Borrowings: Aggregate principal amounts outstanding $ 142 $ 84 Fair value $ 142 $ 84

Derivative and Hedging (Tables)

Derivative and Hedging (Tables)	6 Months Ended
	Jun. 30, 2019
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of Gains (Losses) Recognized in Condensed Consolidated Statements of Income on Derivative Instruments	The following table presents gains (losses) recognized in the condensed consolidated statements of income on derivative instruments: Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 Derivative Instruments Statement of Income Classification Gains (Losses) Gains (Losses) Total return swaps Nonoperating income (expense) $ (14 ) $ 2 $ (64 ) $ 7 Forward foreign currency exchange contracts Other general and administration expense (49 ) (93 ) (13 ) (63 ) Total gain (loss) from derivative instruments $ (63 ) $ (91 ) $ (77 ) $ (56 )

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Components of Lease Cost	The following table presents components of lease cost included in general and administration expense on the condensed consolidated statement of income: (in millions) Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 Lease cost: Operating lease cost (1) $ 34 $ 68 Variable lease cost (2) 10 18 Total lease cost $ 44 $ 86 (1) (2) Amount includes lease payments, which may be adjusted based on usage, changes in an index or market rate
Schedule of Financial Condition Information Related to Operating Leases	(in millions) Statement of Financial Condition Classification June 30, 2019 Statement of Financial Condition information: Operating lease ROU assets Other assets $ 646 Operating lease liabilities Other liabilities $ 754
Schedule of Supplemental Information Related to Operating Lease	Supplemental information related to operating lease is summarized below: (in millions) Six Months Ended June 30, 2019 Supplemental cash flow information: Cash paid for amounts included in the measurement of operating lease liabilities $ 70 Supplemental noncash information: ROU assets in exchange for operating lease liabilities in connection with the adoption of ASU 2016-02 $ 661 ROU assets in exchange for operating lease liabilities $ 44 Six Months Ended June 30, 2019 Lease term and discount rate: Weighted-average remaining lease term 9 years Weighted-average discount rate 3 %
Schedule of Maturity of Operating Lease Liabilities	(in millions) Maturity of operating lease liabilities at June 30, 2019 Amount (1) Remainder of 2019 $ 72 2020 143 2021 135 2022 123 2023 73 Thereafter 312 Total lease payments $ 858 Less: imputed interest 104 Present value of lease liabilities $ 754 (1) Commitments and Contingencies

Goodwill (Tables)

Goodwill (Tables)	6 Months Ended
	Jun. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill Activity	Goodwill activity during the six months ended June 30, 2019 was as follows: (in millions) December 31, 2018 $ 13,526 Acquisition (1) 990 Goodwill adjustments related to Quellos (2) (5 ) June 30, 2019 $ 14,511 (1) Acquisition (2) The decrease in goodwill during the six months ended June 30, 2019 resulted from a decline related to tax benefits realized from tax-deductible goodwill in excess of book goodwill from the acquisition of the fund-of-funds business of Quellos Group, LLC in October 2007 (the “Quellos Transaction”). Goodwill related to the Quellos Transaction will continue to be reduced in future periods by the amount of tax benefits realized from tax-deductible goodwill in excess of book goodwill from the Quellos Transaction. The balance of the Quellos tax-deductible goodwill in excess of book goodwill was approximately $121 million and $137 million at June 30, 2019 and December 31, 2018, respectively.

Intangible Assets (Tables)

Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Carrying Amounts of Identifiable Intangible Assets	The carrying amounts of identifiable intangible assets are summarized as follows: (in millions) Indefinite-lived Finite-lived Total December 31, 2018 $ 17,578 $ 261 $ 17,839 Amortization expense — (40 ) (40 ) Acquisition (1) — 678 678 June 30, 2019 $ 17,578 $ 899 $ 18,477 (1) In connection with the eFront Transaction, which closed on May 10, 2019, the Company acquired $452 million of finite-lived customer relationships, $205 million of finite-lived technology-related intangible assets and $21 million of a finite-lived trade name, with weighted-average estimated lives of approximately 11 years, eight years and five years, respectively. See Note 3, Acquisition , for information on the eFront Transaction.

Borrowings (Tables)

Borrowings (Tables)	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Carrying Value and Fair Value of Long-Term Borrowings Determined Market Prices EUR/USD Foreign Exchange Rate	The carrying value and fair value of long-term borrowings determined using market prices and EUR/USD foreign exchange rate at June 30, 2019 included the following: (in millions) Maturity Amount Unamortized Discount and Debt Issuance Costs Carrying Value Fair Value 5.00% Notes due 2019 $ 1,000 $ — $ 1,000 $ 1,011 4.25% Notes due 2021 750 (1 ) 749 780 3.375% Notes due 2022 750 (2 ) 748 777 3.50% Notes due 2024 1,000 (5 ) 995 1,062 1.25% Notes due 2025 797 (6 ) 791 849 3.20% Notes due 2027 700 (5 ) 695 731 3.25% Notes due 2029 1,000 (14 ) 986 1,047 Total Long-term Borrowings $ 5,997 $ (33 ) $ 5,964 $ 6,257

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2019
Commitments And Contingencies Disclosure [Abstract]
Future Minimum Commitments under Operating Leases	At December 31, 2018, future minimum commitments under the operating leases were as follows: (in millions) Year Amount 2019 $ 145 2020 139 2021 130 2022 121 2023 106 Thereafter 1,516 Total $ 2,157

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2019
Revenue From Contract With Customer [Abstract]
Summary of Investment Advisory, Administration Fees and Securities Lending Revenue by Type	The table below presents detail of revenue for the three and six months ended June 30, 2019 and 2018. See Note 2, Significant Accounting Policies Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 Investment advisory, administration fees and securities lending revenue: Equity: Active $ 385 $ 426 $ 760 $ 864 iShares ETFs 870 911 1,717 1,837 Non-ETF Index 163 187 327 363 Equity subtotal 1,418 1,524 2,804 3,064 Fixed income: Active 474 458 931 914 iShares ETFs 234 207 454 415 Non-ETF Index 98 101 195 194 Fixed income subtotal 806 766 1,580 1,523 Multi-asset 288 295 564 591 Alternatives: Illiquid alternatives 118 83 228 160 Liquid alternatives 102 93 196 194 Currency and commodities (1) 24 26 48 51 Alternatives subtotal 244 202 472 405 Long-term 2,756 2,787 5,420 5,583 Cash management 147 157 288 308 Total base fees 2,903 2,944 5,708 5,891 Investment advisory performance fees: Equity 4 43 4 61 Fixed income — (1 ) 2 2 Multi-asset 6 9 6 14 Alternatives: Illiquid alternatives 15 2 35 2 Liquid alternatives 39 38 43 82 Alternatives subtotal 54 40 78 84 Total performance fees 64 91 90 161 Technology services revenue 237 198 441 382 Distribution fees: Retrocessions 164 181 325 373 12b-1 fees (US mutual funds distribution fees) 88 103 177 211 Other 15 10 27 21 Total distribution fees 267 294 529 605 Advisory and other revenue: Advisory 22 33 41 54 Other 31 45 61 95 Total advisory and other revenue 53 78 102 149 Total revenue $ 3,524 $ 3,605 $ 6,870 $ 7,188 _____________________________________________________________ (1) iShares The tables below present the investment advisory, administration fees and securities lending revenue by client type and investment style, respectively: Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 By client type: Retail $ 846 $ 858 $ 1,672 $ 1,713 iShares ETFs 1,128 1,143 2,219 2,301 Institutional: Active 537 511 1,037 1,038 Index 245 275 492 531 Total institutional 782 786 1,529 1,569 Long-term 2,756 2,787 5,420 5,583 Cash management 147 157 288 308 Total $ 2,903 $ 2,944 $ 5,708 $ 5,891 By investment style: Active $ 1,365 $ 1,352 $ 2,672 $ 2,717 Index and iShares 1,391 1,435 2,748 2,866 Long-term 2,756 2,787 5,420 5,583 Cash management 147 157 288 308 Total $ 2,903 $ 2,944 $ 5,708 $ 5,891
Schedule of Estimated Investment Advisory, Administration Fees Expected to be Recognized in Future, Related to Unsatisfied Portion of Performance Obligations	The tables below present estimated investment advisory and administration fees expected to be recognized in the future related to the unsatisfied portion of the performance obligations at June 30, 2019 and 2018: June 30, 2019 Remainder of (in millions) 2019 2020 2021 2022 Thereafter Total Investment advisory and administration fees: Alternatives (1)(2) $ 41 $ 74 $ 62 $ 53 $ 50 $ 280 (1) (2) June 30, 2018 Remainder of (in millions) 2018 2019 2020 2021 Thereafter Total Investment advisory and administration fees: Alternatives (1)(2) $ 43 $ 75 $ 64 $ 52 $ 52 $ 286 (1) (2)
Schedule of Changes in Deferred Carried Interest Liability	The table below presents changes in the deferred carried interest liability (including the portion related to consolidated VIEs), which is included in other liabilities/other liabilities of consolidated VIEs on the condensed consolidated statements of financial condition, for the three and six months ended June 30, 2019 and 2018: Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 Beginning balance $ 327 $ 224 $ 293 $ 219 Net increase (decrease) in unrealized allocations 48 22 99 27 Performance fee revenue recognized (10 ) (4 ) (27 ) (4 ) Ending balance $ 365 $ 242 $ 365 $ 242
Schedule of Estimated Technology Services Revenue Expected to Be Recognized in Future, Related to Unsatisfied Portion of Performance Obligations	The tables below present estimated technology services revenue expected to be recognized in the future related to the unsatisfied portion of the performance obligations at June 30, 2019 and 2018: June 30, 2019 Remainder of (in millions) 2019 2020 2021 2022 Thereafter Total Technology services revenue (1)(2) $ 60 $ 47 $ 33 $ 19 $ 12 $ 171 (1) (2) June 30, 2018 Remainder of (in millions) 2018 2019 2020 2021 Thereafter Total Technology services revenue (1)(2) $ 15 $ 27 $ 23 $ 17 $ 14 $ 96 (1) (2)
Schedule of Changes in Technology Services Deferred Revenue Liability	The table below presents changes in the technology services deferred revenue liability, which is included in other liabilities on the condensed consolidated statements of financial condition, for the three and six months ended June 30, 2019 and 2018: Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 Beginning balance $ 73 $ 66 $ 70 $ 62 Acquisition, net of revenue recognized (1) 24 — 24 — Additions 12 8 23 20 Revenue recognized that was included in the beginning balance (9 ) (10 ) (17 ) (18 ) Ending balance $ 100 $ 64 $ 100 $ 64 (1) Acquisition

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2019
Restricted Stock and RSU Activity	Restricted stock and restricted stock units (“RSUs”) activity for the six months ended June 30, 2019 is summarized below. Outstanding at Restricted Stock and RSUs Weighted- Average Grant Date Fair Value December 31, 2018 2,139,890 $ 429.19 Granted 1,166,382 $ 413.22 Converted (954,315 ) $ 375.09 Forfeited (49,190 ) $ 420.81 June 30, 2019 (1) 2,302,767 $ 443.70 (1) At June 30, 2019, approximately 2.2 million awards are expected to vest and 0.1 million awards have vested but have not been converted.
Performance-Based RSUs [Member]
Restricted Stock and RSU Activity	Performance-based RSU activity for the six months ended June 30, 2019 is summarized below. Outstanding at Performance- Based RSUs Weighted- Average Grant Date Fair Value December 31, 2018 845,285 $ 386.13 Granted 283,014 $ 410.32 Additional shares granted due to attainment of performance measures 2,117 $ 296.57 Converted (360,927 ) $ 296.57 Forfeited (11,024 ) $ 456.66 June 30, 2019 758,465 $ 436.50

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Changes in Accumulated Other Comprehensive Income (Loss)	The following table presents changes in accumulated other comprehensive income (loss) for the three and six months ended June 30, 2019 and 2018: Three Months Ended Six Months Ended June 30, June 30, (in millions) 2019 2018 2019 2018 Beginning balance $ (623 ) $ (301 ) $ (691 ) $ (432 ) Foreign currency translation adjustments (1) (41 ) (274 ) 27 (137 ) Reclassification as a result of adoption of accounting guidance — — — (6 ) Ending balance $ (664 ) $ (575 ) $ (664 ) $ (575 ) (1) Amounts for the three months ended June 30, 2019 and 2018 include a loss from a net investment hedge of $8 million (net of tax benefit of $2 million) and a gain of $34 million (net of tax of $11 million), respectively. Amounts for the six months ended June 30, 2019 and 2018 include gains from a net investment hedge of $3 million (net of tax of $1 million) and $18 million (net of tax of $6 million), respectively.

Capital Stock (Tables)

Capital Stock (Tables)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Preferred Shares Authorized, Issued and Outstanding	Nonvoting Participating Preferred Stock . The Company’s preferred shares authorized, issued and outstanding consisted of the following: June 30, December 31, 2019 2018 Series A Shares authorized, $0.01 par value 20,000,000 20,000,000 Shares issued and outstanding — — Series B Shares authorized, $0.01 par value 150,000,000 150,000,000 Shares issued and outstanding (1) 823,188 823,188 Series C Shares authorized, $0.01 par value 6,000,000 6,000,000 Shares issued and outstanding (1) — 143,458 Series D Shares authorized, $0.01 par value 20,000,000 20,000,000 Shares issued and outstanding — — (1) Shares held by PNC.

Restructuring (Tables)

Restructuring (Tables)	6 Months Ended
	Jun. 30, 2019
Restructuring And Related Activities [Abstract]
Rollforward of Restructuring Liability	The table below presents a rollforward of the Company’s restructuring liability, which is included in other liabilities on the condensed consolidated statements of financial condition, for the six months ended June 30, 2019: Six Months Ended (in millions) June 30, 2019 Liability as of December 31, 2018 $ 53 Cash payments (42 ) Liability as of June 30, 2019 $ 11

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Computation of Basic and Diluted EPS under Treasury Stock Method	The following table sets forth the computation of basic and diluted EPS for the three and six months ended June 30, 2019 and 2018 under the treasury stock method: Three Months Ended Six Months Ended June 30, June 30, (in millions, except shares and per share data) 2019 2018 2019 2018 Net income attributable to BlackRock $ 1,003 $ 1,073 $ 2,056 $ 2,162 Basic weighted-average shares outstanding 155,354,552 160,980,960 156,803,244 161,114,746 Dilutive effect of nonparticipating RSUs and stock options 1,006,189 1,180,977 1,050,467 1,417,891 Total diluted weighted-average shares outstanding 156,360,741 162,161,937 157,853,711 162,532,637 Basic earnings per share $ 6.46 $ 6.67 $ 13.11 $ 13.42 Diluted earnings per share $ 6.41 $ 6.62 $ 13.02 $ 13.30

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Total Revenue by Geographic Region	The following table illustrates total revenue for the three and six months ended June 30, 2019 and 2018 by geographic region. These amounts are aggregated on a legal entity basis and do not necessarily reflect where the customer resides or affiliated services are provided. Three Months Ended Six Months Ended (in millions) June 30, June 30, Revenue 2019 2018 2019 2018 Americas $ 2,366 $ 2,337 $ 4,606 $ 4,661 Europe 995 1,082 1,938 2,175 Asia-Pacific 163 186 326 352 Total revenue $ 3,524 $ 3,605 $ 6,870 $ 7,188
Schedule of Long-Lived Assets by Geographic Region	The following table illustrates long-lived assets that consist of goodwill and property and equipment at June 30, 2019 and December 31, 2018 by geographic region. These amounts are aggregated on a legal entity basis and do not necessarily reflect where the asset is physically located. (in millions) June 30, December 31, Long-lived Assets 2019 2018 Americas $ 13,791 $ 13,780 Europe 1,292 303 Asia-Pacific 87 86 Total long-lived assets $ 15,170 $ 14,169

Business Overview - Additional

Business Overview - Additional Information (Detail) - PNC [Member]	Jun. 30, 2019
Related Party Transaction [Line Items]
Percentage of common stock of parent owned	22.00%
Percentage of capital stock of parent owned	22.40%

Significant Accounting Polici_3

Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Significant Accounting Policies [Line Items]
Operating lease liability	$ 754
Fair value of loaned securities	17,000	$ 18,900
Fair value of collateral held for loan securities	$ 18,446	$ 20,655
Minimum [Member]
Significant Accounting Policies [Line Items]
Collateral cash and securities received in exchange of value of securities lent in order to reduce counterparty risk	102.00%
Maximum [Member]
Significant Accounting Policies [Line Items]
Collateral cash and securities received in exchange of value of securities lent in order to reduce counterparty risk	112.00%
Accounting Standards Update 2016-02 [Member]
Significant Accounting Policies [Line Items]
Operating lease liability	$ 700

Acquisition - Additional Inform

Acquisition - Additional Information (Detail) - USD ($) $ in Millions	May 10, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Business Acquisition [Line Items]
Amortization of intangible assets		$ 25	$ 11	$ 40	$ 22
Revenue		3,524	$ 3,605	6,870	$ 7,188
eFront [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of equity interest acquired	100.00%
Business acquisition purchase price, excluding settlement of debt	$ 1,300
Amortization of intangible assets		10		$ 10
Finite-lived intangible assets had a weighted-average remaining useful life				10 years
Revenue		$ 22		$ 22
eFront [Member] | Minimum [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life				5 years
eFront [Member] | Maximum [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life				11 years

Acquisition - Summary of Fair V

Acquisition - Summary of Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Millions	May 10, 2019	Jun. 30, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 14,511	$ 13,526
Total consideration, net of cash acquired		$ 1,506
eFront [Member]
Business Acquisition [Line Items]
Accounts receivable	$ 65
Goodwill	990
Other assets	31
Deferred income tax liabilities	(194)
Other liabilities assumed	(64)
Total consideration, net of cash acquired	1,506
Cash paid including settlement of outstanding debt of approximately $0.2 billion	1,555
Cash acquired	(49)
Total consideration, net of cash acquired	1,506
eFront [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets	452
eFront [Member] | Technology-Related [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets	205
eFront [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets	$ 21

Acquisition - Summary of Fair_2

Acquisition - Summary of Fair Values of Assets Acquired and Liabilities Assumed (Parenthetical) (Detail) - eFront [Member] - USD ($) $ in Billions	May 10, 2019	Jun. 30, 2019
Business Acquisition [Line Items]
Settlement of outstanding debt	$ 0.2
Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets, weighed-average estimated useful life	11 years	11 years
Technology-Related [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets, weighed-average estimated useful life	8 years	8 years
Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets, weighed-average estimated useful life	5 years	5 years

Acquisition - Summary of Finite

Acquisition - Summary of Finite-Lived Intangible Assets Weighted-Average Remaining Useful Life (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Total	$ 899	$ 261
eFront [Member]
Business Acquisition [Line Items]
2019 (excluding the six months ended June 30, 2019)	32
2020	60
2021	58
2022	64
2023	70
Thereafter	384
Total	$ 668

Cash, Cash Equivalents and Re_3

Cash, Cash Equivalents and Restricted Cash - Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Restricted Cash And Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 3,920	$ 6,302
Restricted cash included in other assets	$ 17	$ 17
Restricted Cash, Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsMember	us-gaap:OtherAssetsMember
Total cash, cash equivalents and restricted cash	$ 4,040	$ 6,505	$ 6,741	$ 7,096
Consolidated Variable Interest Entities [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 103	$ 186

Investments - Summary of Carryi

Investments - Summary of Carrying Value of Total Investments (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Investments [Line Items]
Held-to-maturity investments	$ 213	$ 188
Trading securities (debt securities of consolidated sponsored investment funds of $143 and $233 at June 30, 2019 and December 31, 2018, respectively)	180	265
Total debt securities	393	453
Equity securities at FVTNI(1) (equity securities of consolidated sponsored investment funds of $309 and $291 at June 30, 2019 and December 31, 2018, respectively)	537	452
Total investments	1,989	1,796
Other Investments [Member]
Investments [Line Items]
Total investments	108
Equity Method Investments [Member]
Investments [Line Items]
Total investments	846	781
Federal Reserve Bank Stock [Member]
Investments [Line Items]
Total investments	93	92
Consolidated Entities [Member] | Carried Interest [Member]
Investments [Line Items]
Total investments	$ 12	$ 18

Investments - Summary of Carr_2

Investments - Summary of Carrying Value of Total Investments (Parenthetical) (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Investments [Line Items]
Equity securities	$ 537	$ 452
Consolidated Sponsored Investment Funds [Member] | Debt securities [Member]
Investments [Line Items]
Total trading investments	143	233
Consolidated Sponsored Investment Funds [Member] | Equity securities [Member]
Investments [Line Items]
Equity securities	$ 309	$ 291

Investments - Additional Inform

Investments - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Investments [Line Items]
Held-to-maturity investments	$ 213	$ 188
Foreign government debt, after five years through ten years	44
Investments in CLOs, after ten years	$ 169
PennyMac [Member]
Investments [Line Items]
Ownership percentage	20.00%
Shares	16
Carrying value - equity method investment	$ 414	397
Market value of equity method investments	$ 345	$ 331

Investments - Summary of Cost a

Investments - Summary of Cost and Carrying Value of Equity and Trading Debt Securities (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Total trading debt securities, Cost	$ 180	$ 280
Equity securities at FVTNI, Cost	479	441
Total trading debt, Carrying Value	180	265
Equity securities at FVTNI, Carrying Value	537	452
Corporate Debt [Member]
Schedule of Investments [Line Items]
Total trading debt securities, Cost	122	144
Total trading debt, Carrying Value	122	140
Government Debt [Member]
Schedule of Investments [Line Items]
Total trading debt securities, Cost	7	69
Total trading debt, Carrying Value	7	67
Asset/Mortgage-Backed Debt [Member]
Schedule of Investments [Line Items]
Total trading debt securities, Cost	51	67
Total trading debt, Carrying Value	51	58
Deferred Compensation Plan Fund [Member]
Schedule of Investments [Line Items]
Equity securities at FVTNI, Cost	6	21
Equity securities at FVTNI, Carrying Value	22	34
Equity Securities/Multi-Asset Mutual Funds [Member]
Schedule of Investments [Line Items]
Equity securities at FVTNI, Cost	473	420
Equity securities at FVTNI, Carrying Value	$ 515	$ 418

Consolidated VREs Recorded in C

Consolidated VREs Recorded in Condensed Consolidated Statements of Financial Condition (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Consolidated Sponsored Investment Funds [Line Items]
Cash and cash equivalents	$ 3,920	$ 6,302
Investments:
Equity securities	537	452
Total investments	1,989	1,796
Other assets	3,078	2,128
Other liabilities	(2,646)	(1,889)
NCI	(57)	(59)
Equity Securities/Multi-Asset Mutual Funds [Member]
Investments:
Equity securities	515	418
Consolidated Voting Rights Entities [Member]
Consolidated Sponsored Investment Funds [Line Items]
Cash and cash equivalents	13	59
Investments:
Trading debt securities	143	233
Total investments	452	524
Other assets	7	8
Other liabilities	(10)	(53)
NCI	(44)	(90)
BlackRock’s net interests in consolidated VREs	418	448
Consolidated Voting Rights Entities [Member] | Equity Securities/Multi-Asset Mutual Funds [Member]
Investments:
Equity securities	$ 309	$ 291

Variable Interest Entities Refl

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

Variable Interest Entities Re_2

Variable Interest Entities Reflects adoption of ASU 2015-12 - Schedule of Net Gain (Loss) Related to Consolidated VIEs (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Variable Interest Entity [Line Items]
Nonoperating net gain (loss) on consolidated VIEs	$ 89	$ 3	$ 231	$ 18
Net income (loss) attributable to noncontrolling interests	10	5	17	10
Consolidated Variable Interest Entities [Member]
Variable Interest Entity [Line Items]
Nonoperating net gain (loss) on consolidated VIEs	39	(14)	133	(12)
Net income (loss) attributable to noncontrolling interests	$ 12	$ 6	$ 17	$ 11

Variable Interest Entities Re_3

Variable Interest Entities Reflects adoption of ASU 2015-12 - Balances Relating to Variable Interest Entities in which BlackRock is Not Primary Beneficiary (Detail) - Variable Interest Entity, Not Primary Beneficiary [Member] - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Investments [Member]
Variable Interest Entity [Line Items]
Sponsored investment products	$ 492,000,000	$ 348,000,000
Advisory Fee Receivables [Member]
Variable Interest Entity [Line Items]
Sponsored investment products	65,000,000	43,000,000
Other Net Assets (Liabilities) [Member]
Variable Interest Entity [Line Items]
Sponsored investment products	(7,000,000)	(6,000,000)
Maximum Risk of Loss [Member]
Variable Interest Entity [Line Items]
Sponsored investment products	$ 574,000,000	$ 408,000,000

Variable Interest Entities Re_4

Variable Interest Entities Reflects adoption of ASU 2015-12 - Additional Information (Detail) - USD ($) $ in Billions	Jun. 30, 2019	Dec. 31, 2018
Variable Interest Entity, Not Primary Beneficiary [Member] | Sponsored Investment Products [Member]
Variable Interest Entity [Line Items]
Net assets of investments funds	$ 11	$ 9

Fair Value Disclosures - Assets

Fair Value Disclosures - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities	$ 180	$ 265
Total equity securities at FVTNI	537	452
Separate account assets	96,807	90,285
Total separate account collateral held under securities lending agreements	18,446	20,655
Separate account collateral liabilities under securities lending agreements	18,446	20,655
Equity securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities at FVTNI	515	418
Investments Measured at NAV [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other assets	63	18
Fair Value, Measurements, Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Held-to-maturity securities	213	188
Total debt securities	393	453
Total equity securities at FVTNI	537	452
Total equity method	846	781
Federal Reserve Bank Stock	93	92
Carried interest	12	18
Other investments	108
Total investments	1,989	1,796
Total investments of consolidated VIEs	2,431	2,680
Other assets	168	122
Separate account assets	96,807	90,285
Total separate account collateral held under securities lending agreements	18,446	20,655
Total	119,841	115,538
Borrowings of consolidated VIEs	142	84
Separate account collateral liabilities under securities lending agreements	18,446	20,655
Other liabilities	175	293
Total liabilities measured at fair value	18,763	21,032
Fair Value, Measurements, Recurring [Member] | Deferred Compensation Plan Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities at FVTNI	22	34
Fair Value, Measurements, Recurring [Member] | Equity Securities/Multi-asset Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities at FVTNI	515	418
Fair Value, Measurements, Recurring [Member] | Debt Securities/ Fixed Income Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities	180	265
Fair Value, Measurements, Recurring [Member] | Equity And Fixed Income Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity method	156	136
Fair Value, Measurements, Recurring [Member] | Other Types Of Investments [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity method	690	645
Total investments of consolidated VIEs	62	58
Fair Value, Measurements, Recurring [Member] | Private/ Public Equity [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	120	205
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities at FVTNI	537	452
Total equity method	182	122
Total investments	719	574
Total investments of consolidated VIEs	736	569
Other assets	168	122
Separate account assets	69,029	63,610
Total separate account collateral held under securities lending agreements	12,113	15,066
Total	82,765	79,941
Separate account collateral liabilities under securities lending agreements	12,113	15,066
Total liabilities measured at fair value	12,113	15,066
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Deferred Compensation Plan Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities at FVTNI	22	34
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities/Multi-asset Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities at FVTNI	515	418
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity And Fixed Income Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity method	140	122
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Types Of Investments [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity method	42
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total debt securities	178	261
Total investments	178	261
Total investments of consolidated VIEs	959	1,409
Separate account assets	27,001	25,810
Total separate account collateral held under securities lending agreements	6,333	5,589
Total	34,471	33,069
Separate account collateral liabilities under securities lending agreements	6,333	5,589
Other liabilities	7	6
Total liabilities measured at fair value	6,340	5,595
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Debt Securities/ Fixed Income Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities	178	261
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total debt securities	2	4
Total investments	2	4
Total investments of consolidated VIEs	134	152
Total	136	156
Borrowings of consolidated VIEs	142	84
Other liabilities	168	287
Total liabilities measured at fair value	310	371
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Debt Securities/ Fixed Income Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities	2	4
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Private/ Public Equity [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	9	82
Fair Value, Measurements, Recurring [Member] | Equity securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	736	569
Total separate account collateral held under securities lending agreements	12,113	15,066
Fair Value, Measurements, Recurring [Member] | Equity securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	736	569
Total separate account collateral held under securities lending agreements	12,113	15,066
Fair Value, Measurements, Recurring [Member] | Carried Interest [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	429	369
Fair Value, Measurements, Recurring [Member] | Debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	939	1,395
Total separate account collateral held under securities lending agreements	6,333	5,589
Fair Value, Measurements, Recurring [Member] | Debt securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	939	1,395
Total separate account collateral held under securities lending agreements	6,333	5,589
Fair Value, Measurements, Recurring [Member] | Bank Loans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	145	84
Fair Value, Measurements, Recurring [Member] | Bank Loans [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	20	14
Fair Value, Measurements, Recurring [Member] | Bank Loans [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	125	70
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Investment in NAV [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity method	661	656
Total investments	661	656
Total investments of consolidated VIEs	95	106
Total	756	762
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Equity And Fixed Income Mutual Funds [Member] | Investment in NAV [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity method	16	14
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Other Types Of Investments [Member] | Investment in NAV [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity method	645	642
Total investments of consolidated VIEs	62	58
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Private/ Public Equity [Member] | Investment in NAV [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	33	48
Fair Value, Measurements, Recurring [Member] | Other [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Held-to-maturity securities	213	188
Total debt securities	213	188
Total equity method	3	3
Federal Reserve Bank Stock	93	92
Carried interest	12	18
Other investments	108
Total investments	429	301
Total investments of consolidated VIEs	507	444
Separate account assets	777	865
Total	1,713	1,610
Fair Value, Measurements, Recurring [Member] | Other [Member] | Other Types Of Investments [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity method	3	3
Fair Value, Measurements, Recurring [Member] | Other [Member] | Private/ Public Equity [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	78	75
Fair Value, Measurements, Recurring [Member] | Other [Member] | Carried Interest [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments of consolidated VIEs	$ 429	$ 369

Fair Value Disclosures - Asse_2

Fair Value Disclosures - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Parenthetical) $ in Millions	Jun. 30, 2019USD ($)
Significant Other Observable Inputs (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Non marketable equity security	$ 60

Fair Value Disclosures - Additi

Fair Value Disclosures - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Collateralized loan obligations outstanding borrowings maturity year	2030
Fair Value Option [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments	$ 32	$ 32
Significant Unobservable Inputs (Level 3) [Member] | Private/ Public Equity [Member] | Consolidated Variable Interest Entities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total investments	$ 134	$ 152

Fair Value Disclosures - Change

Fair Value Disclosures - Changes in Level 3 Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value, beginning balance	$ 133	$ 147	$ 156	$ 116
Realized and Unrealized Gains (Losses),Assets	(1)		(1)
Purchases, Assets	4		57	31
Sales and Maturities, Assets		(12)		(12)
Transfers out of Level 3, Assets		(31)	(76)	(31)
Assets measured at fair value, ending balance	136	104	136	104
Total Net Unrealized Gains (Losses) Included in Earnings	(1)		(1)
Liabilities measured at fair value, beginning balance	409		371
Realized and Unrealized Gains (Losses), Liabilities	(13)		(19)
Issuances and other Settlements, Liabilities	(112)		(80)
Liabilities measured at fair value, ending balance	310		310
Total Net Unrealized Gains (Losses) Included in Earnings	(13)		(19)
Available-for-sale Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value, beginning balance		26
Purchases, Assets				26
Transfers out of Level 3, Assets		(26)		(26)
Other Liabilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Liabilities measured at fair value, beginning balance	275	242	287	236
Realized and Unrealized Gains (Losses), Liabilities	(13)	3	(19)	(3)
Issuances and other Settlements, Liabilities	(120)	(16)	(138)	(16)
Liabilities measured at fair value, ending balance	168	223	168	223
Total Net Unrealized Gains (Losses) Included in Earnings	(13)	3	(19)	(3)
Consolidated Variable Interest Entities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value, beginning balance	133		152
Realized and Unrealized Gains (Losses),Assets	(1)		(1)
Purchases, Assets	2		55
Transfers out of Level 3, Assets			(72)
Assets measured at fair value, ending balance	134		134
Total Net Unrealized Gains (Losses) Included in Earnings	(1)		(1)
Consolidated Variable Interest Entities [Member] | Borrowings [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Liabilities measured at fair value, beginning balance	134		84
Issuances and other Settlements, Liabilities	8		58
Liabilities measured at fair value, ending balance	142		142
Consolidated Variable Interest Entities [Member] | Bank Loans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value, beginning balance	123		70
Purchases, Assets	2		55
Assets measured at fair value, ending balance	125		125
Consolidated Variable Interest Entities [Member] | Private/ Public Equity [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value, beginning balance	10	116	82	116
Realized and Unrealized Gains (Losses),Assets	(1)		(1)
Sales and Maturities, Assets		(12)		(12)
Transfers out of Level 3, Assets			(72)
Assets measured at fair value, ending balance	9	104	9	104
Total Net Unrealized Gains (Losses) Included in Earnings	(1)		(1)
Trading [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value, beginning balance		5
Purchases, Assets				5
Transfers out of Level 3, Assets		(5)		(5)
Trading [Member] | Debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value, beginning balance			4
Purchases, Assets	2		2
Transfers out of Level 3, Assets			(4)
Assets measured at fair value, ending balance	2		2
Investments [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value, beginning balance		31	4
Purchases, Assets	2		2	31
Transfers out of Level 3, Assets		$ (31)	(4)	$ (31)
Assets measured at fair value, ending balance	$ 2		$ 2

Fair Value Disclosures - Fair V

Fair Value Disclosures - Fair Value of Financial Assets and Financial Liabilities (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 3,920	$ 6,302
Long-term borrowings	5,964	4,979
Consolidated Variable Interest Entities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	103	186
Long-term borrowings	142	84
Carrying Amount [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	3,920	6,302
Other assets	63	18
Carrying Amount [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term borrowings	5,964	4,979
Carrying Amount [Member] | Consolidated Variable Interest Entities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	103	186
Estimated Fair Value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	3,920	6,302
Other assets	63	18
Estimated Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term borrowings	6,257	5,034
Estimated Fair Value [Member] | Consolidated Variable Interest Entities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 103	$ 186

Fair Value Disclosures - Fair_2

Fair Value Disclosures - Fair Value of Financial Assets and Financial Liabilities (Parenthetical) (Detail) - USD ($) $ / shares in Units, $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 3,920	$ 6,302
Money market valuation per share floor	$ 1
Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 371	173
Consolidated Variable Interest Entities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	103	186
Consolidated Variable Interest Entities [Member] | Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 13	$ 7

Fair Value Disclosures - Invest

Fair Value Disclosures - Investments in Certain Entities Calculate Net Asset Value per Share (Detail) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total Unfunded Commitments	$ 608	$ 343
Fair Value Measured at NAV per share [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 756	$ 762
Hedge Funds/Funds of Hedge Funds [Member] | Consolidated Variable Interest Entities [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Redemption Notice Period, days	90 days	90 days
Hedge Funds/Funds of Hedge Funds [Member] | Consolidated Variable Interest Entities [Member] | Fair Value Measured at NAV per share [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 4	$ 3
Real Assets Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total Unfunded Commitments	152	130
Real Assets Funds [Member] | Consolidated Variable Interest Entities [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total Unfunded Commitments	10	37
Real Assets Funds [Member] | Consolidated Variable Interest Entities [Member] | Fair Value Measured at NAV per share [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	58	55
Private Equity Funds Of Funds [Member] | Consolidated Variable Interest Entities [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total Unfunded Commitments	11	18
Private Equity Funds Of Funds [Member] | Consolidated Variable Interest Entities [Member] | Fair Value Measured at NAV per share [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	33	48
Equity Method Investments [Member] | Hedge Funds/Funds of Hedge Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total Unfunded Commitments	$ 85	$ 96
Redemption Frequency (Daily)	27.00%	30.00%
Redemption Frequency (Monthly)	27.00%	30.00%
Redemption Frequency (Quarterly)	20.00%	18.00%
Redemption Frequency (Not Redeemable)	53.00%	52.00%
Equity Method Investments [Member] | Hedge Funds/Funds of Hedge Funds [Member] | Fair Value Measured at NAV per share [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 188	$ 173
Equity Method Investments [Member] | Hedge Funds/Funds of Hedge Funds [Member] | Minimum [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Redemption Notice Period, days	1 day	1 day
Equity Method Investments [Member] | Hedge Funds/Funds of Hedge Funds [Member] | Maximum [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Redemption Notice Period, days	90 days	90 days
Equity Method Investments [Member] | Private Equity Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total Unfunded Commitments	$ 349	$ 83
Equity Method Investments [Member] | Private Equity Funds [Member] | Fair Value Measured at NAV per share [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	123	116
Equity Method Investments [Member] | Real Assets Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total Unfunded Commitments	$ 142	$ 93
Redemption Frequency (Quarterly)	64.00%	68.00%
Redemption Frequency (Not Redeemable)	36.00%	32.00%
Redemption Notice Period, Not Redeemable	60 days	60 days
Equity Method Investments [Member] | Real Assets Funds [Member] | Fair Value Measured at NAV per share [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 334	$ 353
Equity Method Investments [Member] | Other Types Of Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total Unfunded Commitments	$ 11	$ 16
Redemption Frequency (Daily)	73.00%	80.00%
Redemption Frequency (Monthly)	73.00%
Redemption Frequency (Not Redeemable)	27.00%	20.00%
Redemption Notice Period, days		5 days
Equity Method Investments [Member] | Other Types Of Investments [Member] | Fair Value Measured at NAV per share [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 16	$ 14
Equity Method Investments [Member] | Other Types Of Investments [Member] | Minimum [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Redemption Notice Period, days	3 days
Equity Method Investments [Member] | Other Types Of Investments [Member] | Maximum [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Redemption Notice Period, days	5 days

Fair Value Disclosures - Inve_2

Fair Value Disclosures - Investments in Certain Entities Calculate Net Asset Value per Share (Parenthetical) (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total Unfunded Commitments	$ 608	$ 343
Real Assets Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total Unfunded Commitments	152	130
Amount of unfunded commitments contractually obligated to fund	145	117
Real Assets Funds [Member] | Consolidated Variable Interest Entities [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total Unfunded Commitments	10	37
Private Equity Funds Of Funds [Member] | Consolidated Variable Interest Entities [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total Unfunded Commitments	11	18
Amount of unfunded commitments contractually obligated to fund	$ 22	$ 22

Fair Value Disclosures - Summar

Fair Value Disclosures - Summary of Information Related to Assets and Liabilities of Consolidated CLO Recorded within Investments and Borrowings of Consilidated VIEs Respetively for which Fair Value Option was Elected (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Fair Value Option Quantitative Disclosures [Line Items]
Aggregate principal amounts outstanding	$ 5,997
CLO Bank Loans [Member]
Fair Value Option Quantitative Disclosures [Line Items]
Aggregate principal amounts outstanding	145	$ 84
Fair value	145	84
CLO Borrowings [Member]
Fair Value Option Quantitative Disclosures [Line Items]
Aggregate principal amounts outstanding	142	84
Fair value	$ 142	$ 84

Derivatives and Hedging - Addit

Derivatives and Hedging - Additional Information (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Derivative maximum risk of loss for credit protection	$ 17	$ 17
Forward Foreign Currency Exchange Contracts [Member]
Derivative [Line Items]
Notional value	2,100	2,200
Total Return Swaps [Member]
Derivative [Line Items]
Notional value	$ 522	$ 483

Derivatives and Hedging - Summa

Derivatives and Hedging - Summary of Gains (Losses) Recognized in Condensed Consolidated Statements of Income on Derivative Instruments (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Derivative Instruments Gain Loss [Line Items]
Total gain (loss) from derivative instruments	$ (63)	$ (91)	$ (77)	$ (56)
Forward Foreign Currency Exchange Contracts [Member] | Other General and Administration Expense [Member]
Derivative Instruments Gain Loss [Line Items]
Total gain (loss) from derivative instruments	(49)	(93)	(13)	(63)
Total Return Swaps [Member] | Nonoperating Income (Expense) [Member]
Derivative Instruments Gain Loss [Line Items]
Total gain (loss) from derivative instruments	$ (14)	$ 2	$ (64)	$ 7

Leases - Components of Lease Co

Leases - Components of Lease Cost (Detail) - USD ($) $ in Millions		3 Months Ended	6 Months Ended
		Jun. 30, 2019	Jun. 30, 2019
Lease cost:
Operating lease cost	[1]	$ 34	$ 68
Variable lease cost	[2]	10	18
Total lease cost		$ 44	$ 86
[1]
[2]	Amount includes lease payments, which may be adjusted based on usage, changes in an index or market rate

Leases - Schedule of Financial

Leases - Schedule of Financial Condition Information Related to Operating Leases (Detail) $ in Millions	Jun. 30, 2019USD ($)
Leases [Abstract]
Operating lease ROU assets	$ 646
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets
Operating lease liability	$ 754
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilities

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Information Related to Operating Leases (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)
Supplemental disclosure of cash flow information:
Cash paid for amounts included in the measurement of operating lease liabilities	$ 70
Supplemental noncash information:
ROU assets in exchange for operating lease liabilities in connection with the adoption of ASU 2016-02	$ 44
Weighted-average remaining lease term	9 years
Weighted-average discount rate	3.00%
Accounting Standards Update 2016-02 [Member]
Supplemental noncash information:
ROU assets in exchange for operating lease liabilities in connection with the adoption of ASU 2016-02	$ 661

Leases - Schedule of Maturity o

Leases - Schedule of Maturity of Operating Lease Liabilities (Details) $ in Millions	Jun. 30, 2019USD ($)
Leases [Abstract]
Remainder of 2019	$ 72
2020	143
2021	135
2022	123
2023	73
Thereafter	312
Total lease payments	858
Less: imputed interest	104
Operating lease liability	$ 754

Leases - Schedule of Maturity_2

Leases - Schedule of Maturity of Operating Lease Liabilities (Parenthetical) (Details) $ in Billions	Jun. 30, 2019USD ($)
Leases [Abstract]
Minimum lease payments for leases signed but not yet commenced excluded	$ 1.3

Goodwill - Goodwill Activity (D

Goodwill - Goodwill Activity (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)
Goodwill Roll Forward
Beginning balance	$ 13,526
Acquisition	990
Goodwill adjustment related to Quellos	(5)
Ending balance	$ 14,511

Goodwill - Goodwill Activity (P

Goodwill - Goodwill Activity (Parenthetical) (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Goodwill [Line Items]
Acquisition	$ 990
Excess of tax goodwill over book goodwill	121	$ 137
eFront [Member]
Goodwill [Line Items]
Acquisition	$ 990

Intangible Assets - Carrying Am

Intangible Assets - Carrying Amounts of Identifiable Intangible Assets (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Indefinite-lived intangible assets, Beginning balance				$ 17,578
Indefinite-lived intangible assets, Ending balance		$ 17,578		17,578
Finite-lived intangible assets, Beginning balance				261
Finite-lived intangible assets, amortization expense		(25)	$ (11)	(40)	$ (22)
Finite-lived intangible assets, acquisition	[1]			678
Finite-lived intangible assets, Ending balance		899		899
Intangible assets, Beginning balance				17,839
Intangible assets, Ending balance		$ 18,477		$ 18,477
[1]	In connection with the eFront Transaction, which closed on May 10, 2019, the Company acquired $452 million of finite-lived customer relationships, $205 million of finite-lived technology-related intangible assets and $21 million of a finite-lived trade name, with weighted-average estimated lives of approximately 11 years, eight years and five years, respectively. See Note 3, Acquisition , for information on the eFront Transaction.

Intangible Assets - Carrying _2

Intangible Assets - Carrying Amounts of Identifiable Intangible Assets (Parenthetical) (Detail) - USD ($) $ in Millions		May 10, 2019	Jun. 30, 2019
Schedule Of Intangible Assets [Line Items]
Finite-lived intangible assets, acquired	[1]		$ 678
eFront [Member] | Customer Relationships [Member]
Schedule Of Intangible Assets [Line Items]
Finite-lived intangible assets, acquired			$ 452
Finite-lived intangible assets, weighed-average estimated useful life		11 years	11 years
eFront [Member] | Technology-Related [Member]
Schedule Of Intangible Assets [Line Items]
Finite-lived intangible assets, acquired			$ 205
Finite-lived intangible assets, weighed-average estimated useful life		8 years	8 years
eFront [Member] | Trade Names [Member]
Schedule Of Intangible Assets [Line Items]
Finite-lived intangible assets, acquired			$ 21
Finite-lived intangible assets, weighed-average estimated useful life		5 years	5 years
[1]	In connection with the eFront Transaction, which closed on May 10, 2019, the Company acquired $452 million of finite-lived customer relationships, $205 million of finite-lived technology-related intangible assets and $21 million of a finite-lived trade name, with weighted-average estimated lives of approximately 11 years, eight years and five years, respectively. See Note 3, Acquisition , for information on the eFront Transaction.

Borrowings - Additional Informa

Borrowings - Additional Information (Detail) - USD ($)	1 Months Ended	6 Months Ended
	Apr. 30, 2019	Jun. 30, 2019
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount		$ 5,997,000,000
Commercial Paper [Member]
Debt Instrument [Line Items]
Maximum amount available under facility		4,000,000,000
Amount outstanding under credit facility		0
2019 Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Unsecured revolving credit facility		4,000,000,000
Additional amount available, subject to lender credit approval		1,000,000,000
Maximum amount available under facility		5,000,000,000
Amount outstanding under credit facility		$ 0
Extended debt instrument maturity date		2024-03
Line of credit facility, covenant terms		The 2019 credit facility requires the Company not to exceed a maximum leverage ratio (ratio of net debt to earnings before interest, taxes, depreciation and amortization, where net debt equals total debt less unrestricted cash) of 3 to 1
Line of credit facility, covenant compliance		satisfied with a ratio of less than 1 to 1
3.25% Notes due 2029 [Member]
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount	$ 1,000,000,000	$ 1,000,000,000
Debt instrument, interest rate	3.25%
Debt instrument, maturity date	Apr. 30, 2029
Debt instrument, Approximate annual interest expense	$ 33,000,000
Debt instrument, payment terms	Interest is payable semi-annually on April 30 and October 30 of each year, commencing October 30, 2019

Borrowings - Carrying Value and

Borrowings - Carrying Value and Fair Value of Long-Term Borrowings Determined Market Prices EUR/USD Foreign Exchange Rate (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Apr. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Maturity Amount	$ 5,997
Unamortized Discount and Debt Issuance Costs	(33)
Carrying Value	5,964		$ 4,979
Fair Value	6,257
5.00% Notes due 2019 [Member]
Debt Instrument [Line Items]
Maturity Amount	1,000
Carrying Value	1,000
Fair Value	1,011
4.25% Notes due 2021 [Member]
Debt Instrument [Line Items]
Maturity Amount	750
Unamortized Discount and Debt Issuance Costs	(1)
Carrying Value	749
Fair Value	780
3.375% Notes due 2022 [Member]
Debt Instrument [Line Items]
Maturity Amount	750
Unamortized Discount and Debt Issuance Costs	(2)
Carrying Value	748
Fair Value	777
3.50% Notes due 2024 [Member]
Debt Instrument [Line Items]
Maturity Amount	1,000
Unamortized Discount and Debt Issuance Costs	(5)
Carrying Value	995
Fair Value	1,062
1.25% Notes due 2025 [Member]
Debt Instrument [Line Items]
Maturity Amount	797
Unamortized Discount and Debt Issuance Costs	(6)
Carrying Value	791
Fair Value	849
3.20% Notes due 2027 [Member]
Debt Instrument [Line Items]
Maturity Amount	700
Unamortized Discount and Debt Issuance Costs	(5)
Carrying Value	695
Fair Value	731
3.25% Notes due 2029 [Member]
Debt Instrument [Line Items]
Maturity Amount	1,000	$ 1,000
Unamortized Discount and Debt Issuance Costs	(14)
Carrying Value	986
Fair Value	$ 1,047

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)ft²	Dec. 31, 2018USD ($)
Commitment And Contingencies [Line Items]
Various capital commitments to fund sponsored investment funds, including funds of private equity funds, real assets funds, opportunistic funds and distressed credit funds	$ 605
Total operating lease minimum commitments		$ 2,157
Derivative maximum risk of loss for credit protection	17	$ 17
Securities lending loan balances indemnified	205,000
Collateral for indemnified securities	219,000
Other Liabilities [Member]
Commitment And Contingencies [Line Items]
Contingent consideration at fair value	$ 168
Operating Lease [Member]
Commitment And Contingencies [Line Items]
Area of office space | ft²	847,000
Operating leases, term of contract	20 years
Expected lease commencement date	2023-05
Annual base rental payments first five years	$ 51
Annual base rental payments five to ten years	58
Annual base rental payments ten to fifteen years	66
Annual base rental payments fifteen to twenty years	74
Total operating lease minimum commitments	$ 1,200

Commitments and Contingencies_2

Commitments and Contingencies - Future Minimum Commitments under Operating Leases (Detail) $ in Millions	Dec. 31, 2018USD ($)
Commitments And Contingencies Disclosure [Abstract]
2019	$ 145
2020	139
2021	130
2022	121
2023	106
Thereafter	1,516
Total operating lease minimum commitments	$ 2,157

Revenue - Summary of Details of

Revenue - Summary of Details of Revenue (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation Of Revenue [Line Items]
Total revenue	$ 3,524	$ 3,605	$ 6,870	$ 7,188
Investment Advisory, Administration Fees and Securities Lending Revenue [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	2,903	2,944	5,708	5,891
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Equity Active Product [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	385	426	760	864
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Equity iShares ETFs [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	870	911	1,717	1,837
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Equity Non-ETF Index [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	163	187	327	363
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Equity [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	1,418	1,524	2,804	3,064
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Fixed Income Active [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	474	458	931	914
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Fixed Income iShares ETFs [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	234	207	454	415
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Fixed Income Non-ETF Index [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	98	101	195	194
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Fixed Income [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	806	766	1,580	1,523
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Multi-asset [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	288	295	564	591
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Alternatives [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	244	202	472	405
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Alternatives [Member] | Illiquid Alternatives [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	118	83	228	160
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Alternatives [Member] | Liquid Alternatives [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	102	93	196	194
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Alternatives [Member] | Currency and Commodities [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	24	26	48	51
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Cash Management [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	147	157	288	308
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Long-term [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	2,756	2,787	5,420	5,583
Investment Advisory Performance Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	64	91	90	161
Investment Advisory Performance Fees [Member] | Equity [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	4	43	4	61
Investment Advisory Performance Fees [Member] | Fixed Income [Member]
Disaggregation Of Revenue [Line Items]
Total revenue		(1)	2	2
Investment Advisory Performance Fees [Member] | Multi-asset [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	6	9	6	14
Investment Advisory Performance Fees [Member] | Alternatives [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	54	40	78	84
Investment Advisory Performance Fees [Member] | Alternatives [Member] | Illiquid Alternatives [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	15	2	35	2
Investment Advisory Performance Fees [Member] | Alternatives [Member] | Liquid Alternatives [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	39	38	43	82
Technology Services Revenue [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	237	198	441	382
Distribution Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	267	294	529	605
Distribution Fees [Member] | Retrocessions [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	164	181	325	373
Distribution Fees [Member] | 12b-1 Fees (US Mutual Funds Distribution Fees) [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	88	103	177	211
Distribution Fees [Member] | Other Distribution Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	15	10	27	21
Advisory and Other Revenue [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	53	78	102	149
Advisory and Other Revenue [Member] | Advisory [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	22	33	41	54
Advisory and Other Revenue [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 31	$ 45	$ 61	$ 95

Revenue - Summary of Investment

Revenue - Summary of Investment Advisory, Administration Fees and Securities Lending Revenue by Client Type and Investment Style (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation Of Revenue [Line Items]
Total revenue	$ 3,524	$ 3,605	$ 6,870	$ 7,188
Revenue by Client Type [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	2,903	2,944	5,708	5,891
Revenue by Client Type [Member] | Retail [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	846	858	1,672	1,713
Revenue by Client Type [Member] | iShares ETFs [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	1,128	1,143	2,219	2,301
Revenue by Client Type [Member] | Institutional Active [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	537	511	1,037	1,038
Revenue by Client Type [Member] | Institutional Index [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	245	275	492	531
Revenue by Client Type [Member] | Institutional [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	782	786	1,529	1,569
Revenue by Client Type [Member] | Cash Management [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	147	157	288	308
Revenue by Client Type [Member] | Long-term [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	2,756	2,787	5,420	5,583
Revenue by Investment Style [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	2,903	2,944	5,708	5,891
Revenue by Investment Style [Member] | Active [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	1,365	1,352	2,672	2,717
Revenue by Investment Style [Member] | Index and iShares ETFs [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	1,391	1,435	2,748	2,866
Revenue by Investment Style [Member] | Cash Management [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	147	157	288	308
Revenue by Investment Style [Member] | Long-term [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 2,756	$ 2,787	$ 5,420	$ 5,583

Revenue - Schedule of Estimated

Revenue - Schedule of Estimated Investment Advisory, Administration Fees Expected to be Recognized in Future, Related to Unsatisfied Portion of Performance Obligations (Detail) - Investment Advisory, Administration Fees and Securities Lending Revenue [Member] - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018
Schedule of Investment Advisory Administration Fees and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation	$ 280	$ 286
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2018-07-01
Schedule of Investment Advisory Administration Fees and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		6 months
Revenue, Remaining Performance Obligation		$ 43
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-01-01
Schedule of Investment Advisory Administration Fees and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Revenue, Remaining Performance Obligation		$ 75
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-07-01
Schedule of Investment Advisory Administration Fees and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	6 months
Revenue, Remaining Performance Obligation	$ 41
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Schedule of Investment Advisory Administration Fees and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year	1 year
Revenue, Remaining Performance Obligation	$ 74	$ 64
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Schedule of Investment Advisory Administration Fees and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year	1 year
Revenue, Remaining Performance Obligation	$ 62	$ 52
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Schedule of Investment Advisory Administration Fees and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation	$ 53	$ 52
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-01-01
Schedule of Investment Advisory Administration Fees and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Revenue, Remaining Performance Obligation	$ 50

Revenue - Schedule of Estimat_2

Revenue - Schedule of Estimated Investment Advisory, Administration Fees Expected to be Recognized in Future, Related to Unsatisfied Portion of Performance Obligations (Detail 1) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018
Investment Advisory, Administration Fees and Securities Lending Revenue [Member]
Schedule of Investment Advisory Administration Fees and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation	$ 280	$ 286

Revenue - Schedule of Changes i

Revenue - Schedule of Changes in Deferred Carried Interest Liability (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue From Contract With Customer [Abstract]
Beginning balance	$ 327	$ 224	$ 293	$ 219
Net increase (decrease) in unrealized allocations	48	22	99	27
Performance fee revenue recognized	(10)	(4)	(27)	(4)
Ending balance	$ 365	$ 242	$ 365	$ 242

Revenue - Schedule of Estimat_3

Revenue - Schedule of Estimated Technology Services Revenue Expected to Be Recognized in Future, Related to Unsatisfied Portion of Performance Obligations (Detail) - Technology Services Revenue [Member] - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018
Schedule of Investment Advisory Administration Fees and Securities Lending Revenue and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation	$ 171	$ 96
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2018-07-01
Schedule of Investment Advisory Administration Fees and Securities Lending Revenue and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		6 months
Revenue, Remaining Performance Obligation		$ 15
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-01-01
Schedule of Investment Advisory Administration Fees and Securities Lending Revenue and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Revenue, Remaining Performance Obligation		$ 27
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-07-01
Schedule of Investment Advisory Administration Fees and Securities Lending Revenue and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	6 months
Revenue, Remaining Performance Obligation	$ 60
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Schedule of Investment Advisory Administration Fees and Securities Lending Revenue and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year	1 year
Revenue, Remaining Performance Obligation	$ 47	$ 23
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Schedule of Investment Advisory Administration Fees and Securities Lending Revenue and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year	1 year
Revenue, Remaining Performance Obligation	$ 33	$ 17
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Schedule of Investment Advisory Administration Fees and Securities Lending Revenue and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation	$ 19	$ 14
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-01-01
Schedule of Investment Advisory Administration Fees and Securities Lending Revenue and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Revenue, Remaining Performance Obligation	$ 12

Revenue - Schedule of Estimat_4

Revenue - Schedule of Estimated Technology Services Revenue Expected to Be Recognized in Future, Related to Unsatisfied Portion of Performance Obligations (Detail 1) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018
Technology Services Revenue [Member]
Schedule of Investment Advisory Administration Fees and Securities Lending Revenue and Performance Fees by Type [line Items]
Revenue, Remaining Performance Obligation	$ 171	$ 96

Revenue - Additional Informatio

Revenue - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Schedule of Investment Advisory Administration Fees and Securities Lending Revenue and Performance Fees by Type [line Items]
Estimated annual fixed minimum fees for currently outstanding contracts	$ 303	$ 258
Minimum [Member]
Schedule of Investment Advisory Administration Fees and Securities Lending Revenue and Performance Fees by Type [line Items]
Term of currently outstanding contracts	1 year
Maximum [Member]
Schedule of Investment Advisory Administration Fees and Securities Lending Revenue and Performance Fees by Type [line Items]
Term of currently outstanding contracts	5 years

Revenue - Schedule of Changes_2

Revenue - Schedule of Changes in Technology Services Deferred Revenue Liability (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue From Contract With Customer [Abstract]
Beginning balance	$ 73	$ 66	$ 70	$ 62
Acquisition, net of revenue recognized	24		24
Additions	12	8	23	20
Revenue recognized that was included in the beginning balance	(9)	(10)	(17)	(18)
Ending balance	$ 100	$ 64	$ 100	$ 64

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock and RSU Activity (Detail) - $ / shares	1 Months Ended	6 Months Ended
	Jan. 31, 2019	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock and RSUs, beginning of period	2,139,890	2,139,890
Restricted Stock and RSUs, Granted		1,166,382
Restricted Stock and RSUs, Converted		(954,315)
Restricted Stock and RSUs, Forfeited		(49,190)
Restricted Stock and RSUs, end of period		2,302,767
Weighted-Average Grant Date Fair Value, beginning of period	$ 429.19	$ 429.19
Weighted-Average Grant Date Fair Value, Granted		413.22
Weighted-Average Grant Date Fair Value, Converted		375.09
Weighted-Average Grant Date Fair Value, Forfeited		420.81
Weighted-Average Grant Date Fair Value, end of period		$ 443.70
Performance-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock and RSUs, beginning of period	845,285	845,285
Restricted Stock and RSUs, Granted	283,014	283,014
Restricted Stock and RSUs, Additional Grants	2,117	2,117
Restricted Stock and RSUs, Converted		(360,927)
Restricted Stock and RSUs, Forfeited		(11,024)
Restricted Stock and RSUs, end of period		758,465
Weighted-Average Grant Date Fair Value, beginning of period	$ 386.13	$ 386.13
Weighted-Average Grant Date Fair Value, Granted		410.32
Weighted-Average Grant Date Fair Value, Additional Grants		296.57
Weighted-Average Grant Date Fair Value, Converted		296.57
Weighted-Average Grant Date Fair Value, Forfeited		456.66
Weighted-Average Grant Date Fair Value, end of period		$ 436.50

Stock-Based Compensation - Re_2

Stock-Based Compensation - Restricted Stock and RSU Activity (Parenthetical) (Detail) shares in Millions	Jun. 30, 2019shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-based compensation awards expected to vest	2.2
Awards vested, not converted	0.1

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Jan. 31, 2019	Jan. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock and RSUs, Granted			1,166,382
Fair value of RSUs/restricted stock granted to employees			$ 482
RSUs/Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock and RSUs, Granted		674,206
Award vesting period, years		3 years
Awards to employees cliff vesting		377,291
RSUs to employees that cliff vest, percentage		100.00%
RSUs to employees that cliff vest, date		Jan. 31, 2022
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of outstanding RSUs			$ 1,100
Stock price			$ 469.30
Unrecognized stock-based compensation expense			$ 512
Remaining weighted-average period			1 year 6 months
Performance-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock and RSUs, Granted		283,014	283,014
Award vesting period, years		3 years
Awards to employees cliff vesting		283,014
RSUs to employees that cliff vest, percentage		100.00%
RSUs to employees that cliff vest, date		Jan. 31, 2022
Intrinsic value of outstanding RSUs			$ 356
Stock price			$ 469.30
Unrecognized stock-based compensation expense			$ 161
Remaining weighted-average period			1 year 7 months 6 days
Restricted Stock and RSUs, Additional Grants		2,117	2,117
Fair value of RSUs/restricted stock granted to employees			$ 117
Long-Term Incentive Plans Funded by PNC [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional shares surrendered	143,458
Long-Term Incentive Plans Funded by PNC [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares committed to fund long-term incentive plans			4,000,000
Performance-Based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining weighted-average period			4 years 4 months 24 days
Stock options outstanding			2,106,482	2,106,482
Weighted average exercise price			$ 513.50	$ 513.50
Unrecognized stock-based compensation expense			$ 148

Net Capital Requirements - Addi

Net Capital Requirements - Additional Information (Detail) $ in Billions	Jun. 30, 2019USD ($)
Regulatory Capital Requirements [Abstract]
Net capital requirement in certain regulated subsidiaries	$ 1.8

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance		$ 31,362	$ 32,022	$ 32,433	$ 31,848
Foreign currency translation adjustments	[1]	(41)	(274)	27	(137)
Balance		31,950	32,184	31,950	32,184
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance		(623)	(301)	(691)	(432)
Foreign currency translation adjustments	[1]	(41)	(274)	27	(137)
Reclassification as a result of adoption of accounting guidance					(6)
Balance		$ (664)	$ (575)	$ (664)	$ (575)
[1]	Amounts for the three months ended June 30, 2019 and 2018 include a loss from a net investment hedge of $8 million (net of tax benefit of $2 million) and a gain of $34 million (net of tax of $11 million), respectively. Amounts for the six months ended June 30, 2019 and 2018 include gains from a net investment hedge of $3 million (net of tax of $1 million) and $18 million (net of tax of $6 million), respectively.

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Amounts Reclassified Out Of Accumulated Other Comprehensive Income Loss [Abstract]
Gain (loss) from net investment hedging, net of tax	$ (8)	$ 34	$ 3	$ 18
Gain (loss) from net investment hedging, tax (expenses) benefit	$ 2	$ (11)	$ (1)	$ (6)

Capital Stock - Preferred Share

Capital Stock - Preferred Shares Authorized, Issued and Outstanding (Detail) - shares	Jun. 30, 2019	Dec. 31, 2018
Series A Nonvoting Participating Preferred Stock [Member]
Class of Stock [Line Items]
Shares authorized, $0.01 par value	20,000,000	20,000,000
Shares issued	0	0
Shares outstanding	0	0
Series B Nonvoting Participating Preferred Stock [Member]
Class of Stock [Line Items]
Shares authorized, $0.01 par value	150,000,000	150,000,000
Shares issued	823,188	823,188
Shares outstanding	823,188	823,188
Series C Nonvoting Participating Preferred Stock [Member]
Class of Stock [Line Items]
Shares authorized, $0.01 par value	6,000,000	6,000,000
Shares issued	0	143,458
Shares outstanding	0	143,458
Series D Nonvoting Participating Preferred Stock [Member]
Class of Stock [Line Items]
Shares authorized, $0.01 par value	20,000,000	20,000,000
Shares issued	0	0
Shares outstanding	0	0

Capital Stock - Preferred Sha_2

Capital Stock - Preferred Shares Authorized, Issued and Outstanding (Parenthetical) (Detail) - $ / shares	Jun. 30, 2019	Dec. 31, 2018
Series A Nonvoting Participating Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, par value	$ 0.01	$ 0.01
Series B Nonvoting Participating Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, par value	0.01	0.01
Series C Nonvoting Participating Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, par value	0.01	0.01
Series D Nonvoting Participating Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, par value	$ 0.01	$ 0.01

Capital Stock - Additional Info

Capital Stock - Additional Information (Detail) - USD ($) $ in Millions	Mar. 25, 2019	Jan. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Schedule of Capitalization, Equity [Line Items]
Common shares repurchased				3,800,000
Common shares repurchased, value			$ 300	$ 1,566	$ 635
Shares authorized to be repurchased				6,100,000
Series C Nonvoting Participating Preferred Stock [Member] | PNC [Member]
Schedule of Capitalization, Equity [Line Items]
Surrender of share of series non- voting preferred stock		143,458
Private Transaction
Schedule of Capitalization, Equity [Line Items]
Common shares repurchased, value	$ 1,300

Restructuring - Additional Info

Restructuring - Additional Information (Detail) $ in Millions	3 Months Ended
	Dec. 31, 2018USD ($)
Restructuring Cost And Reserve [Line Items]
Pre-tax restructuring charge	$ 60
After-tax restructuring charge	47
Employee Severance [Member]
Restructuring Cost And Reserve [Line Items]
Pre-tax restructuring charge	53
Accelerated Amortization of Equity Compensation Awards [Member]
Restructuring Cost And Reserve [Line Items]
Pre-tax restructuring charge	$ 7

Restructuring - Rollforward of

Restructuring - Rollforward of Restructuring Liability (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)
Restructuring And Related Activities [Abstract]
Restructuring liability, beginning balance	$ 53
Cash payments	(42)
Restructuring liability, ending balance	$ 11

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Discrete income tax benefit for vested stock awards	$ 22	$ 58

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted EPS under Treasury Stock Method (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income attributable to BlackRock	$ 1,003	$ 1,073	$ 2,056	$ 2,162
Basic weighted-average shares outstanding	155,354,552	160,980,960	156,803,244	161,114,746
Dilutive effect of nonparticipating RSUs and stock options	1,006,189	1,180,977	1,050,467	1,417,891
Total diluted weighted-average shares outstanding	156,360,741	162,161,937	157,853,711	162,532,637
Basic earnings per share	$ 6.46	$ 6.67	$ 13.11	$ 13.42
Diluted earnings per share	$ 6.41	$ 6.62	$ 13.02	$ 13.30

Segment Information - Additiona

Segment Information - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2019Segment
Segment Reporting [Abstract]
Number of business segments	1

Segment Information - Total Rev

Segment Information - Total Revenue by Geographic Region (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Revenue	$ 3,524	$ 3,605	$ 6,870	$ 7,188
Americas [Member]
Segment Reporting Information [Line Items]
Revenue	2,366	2,337	4,606	4,661
Europe [Member]
Segment Reporting Information [Line Items]
Revenue	995	1,082	1,938	2,175
Asia-Pacific [Member]
Segment Reporting Information [Line Items]
Revenue	$ 163	$ 186	$ 326	$ 352

Segment Information - Schedule

Segment Information - Schedule of Long-Lived Assets by Geographic Region (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Long-lived assets	$ 15,170	$ 14,169
Americas [Member]
Segment Reporting Information [Line Items]
Long-lived assets	13,791	13,780
Europe [Member]
Segment Reporting Information [Line Items]
Long-lived assets	1,292	303
Asia-Pacific [Member]
Segment Reporting Information [Line Items]
Long-lived assets	$ 87	$ 86