v3.8.0.1
Condensed Consolidated Statements of Income - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Revenue    
Total investment advisory, administration fees and securities lending revenue $ 2,947 $ 2,523
Investment advisory performance fees 70 70
Technology and risk management revenue 184 154
Distribution fees 311 287
Advisory and other revenue 71 58
Total revenue 3,583 3,092
Expense    
Employee compensation and benefits 1,121 1,021
Distribution and servicing costs 432 401
Direct fund expense 261 206
General and administration 383 296
Amortization of intangible assets 11 25
Total expense 2,208 1,949
Operating income 1,375 1,143
Nonoperating income (expense)    
Net gain (loss) on investments 15 51
Interest and dividend income 15 7
Interest expense (46) (65)
Total nonoperating income (expense) (16) (7)
Income before income taxes 1,359 1,136
Income tax expense 265 268
Net income 1,094 868
Net income (loss) attributable to noncontrolling interests 5 9
Net income attributable to BlackRock, Inc. $ 1,089 $ 859
Earnings per share attributable to BlackRock, Inc. common stockholders:    
Basic $ 6.75 $ 5.27
Diluted 6.68 5.21
Cash dividends declared and paid per share $ 2.88 $ 2.50
Weighted-average common shares outstanding:    
Basic 161,250,018 163,016,599
Diluted 162,918,961 164,856,183
Related Parties [Member]    
Revenue    
Total investment advisory, administration fees and securities lending revenue $ 2,112 $ 1,768
Other Third Parties [Member]    
Revenue    
Total investment advisory, administration fees and securities lending revenue $ 835 $ 755