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v3.19.3

Consolidated Statements of Changes in Equity - USD ($) $ in Millions | Common Stock [Member] | Additional Paid-in Capital [Member] | Treasury Stock [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income [Member] | Total Stockholders' Equity [Member] | Non-controlling Interests [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 | $ 1 | $ 832 | $ (3) | $ 251 | $ 9 | $ 1,090 | $ 5,343 | $ 6,433
Balance (in shares) at Dec. 31, 2017 | 71,609,049 |  |  |  |  |  |  |
Common Stock distributed pursuant to stock incentive plans (in shares) | 1,532 |  |  |  |  |  |  |
Compensation for stock grants vesting in the future |  | 2 |  |  |  | 2 | 12 | 14
Dividends paid to stockholders |  |  |  | (7) |  | (7) |  | (7)
Distributions from IBG LLC to noncontrolling interests |  |  |  |  |  |  | (61) | (61)
Comprehensive Income |  |  |  | 46 | 1 | 47 | 280 | 327
Balance at Mar. 31, 2018 | $ 1 | 834 | (3) | 290 | 10 | 1,132 | 5,574 | 6,706
Balance (in shares) at Mar. 31, 2018 | 71,610,581 |  |  |  |  |  |  |
Common Stock distributed pursuant to stock incentive plans (in shares) | 2,063,810 |  |  |  |  |  |  |
Compensation for stock grants vesting in the future |  | 3 |  |  |  | 3 | 12 | 15
Repurchase of common stock for employee tax withholding under stock incentive plans |  |  | (45) |  |  | (45) |  | (45)
Sales of treasury stock |  |  | 45 | (1) |  | 44 | (4) | 40
Dividends paid to stockholders |  |  |  | (7) |  | (7) |  | (7)
Distributions from IBG LLC to noncontrolling interests |  |  |  |  |  |  | (189) | (189)
Adjustments for changes in proportionate ownership in IBG LLC |  | 28 |  |  |  | 28 | (28) |
Comprehensive Income |  |  |  | 41 | (13) | 28 | 152 | 180
Balance at Jun. 30, 2018 | $ 1 | 865 | (3) | 323 | (3) | 1,183 | 5,517 | 6,700
Balance (in shares) at Jun. 30, 2018 | 73,674,391 |  |  |  |  |  |  |
Issuance of common stock in follow-on offering |  | 25 |  |  |  | 25 | (25) |
Issuance of common stock in follow-on offering (in shares) | 1,537,727 |  |  |  |  |  |  |
Common Stock distributed pursuant to stock incentive plans (in shares) | 14,770 |  |  |  |  |  |  |
Compensation for stock grants vesting in the future |  | 2 |  |  |  | 2 | 11 | 13
Deferred tax benefit retained - follow-on offering |  | 3 |  |  |  | 3 |  | 3
Dividends paid to stockholders |  |  |  | (8) |  | (8) |  | (8)
Distributions from IBG LLC to noncontrolling interests |  |  |  |  |  |  | (60) | (60)
Comprehensive Income |  |  |  | 39 | (1) | 38 | 217 | 255
Balance at Sep. 30, 2018 | $ 1 | 895 | (3) | 354 | (4) | 1,243 | 5,660 | 6,903
Balance (in shares) at Sep. 30, 2018 | 75,226,888 |  |  |  |  |  |  |
Balance at Dec. 31, 2018 | $ 1 | 898 | (3) | 390 | (4) | 1,282 | 5,874 | 7,156
Balance (in shares) at Dec. 31, 2018 | 75,230,400 |  |  |  |  |  |  |
Common Stock distributed pursuant to stock incentive plans (in shares) | 905 |  |  |  |  |  |  |
Compensation for stock grants vesting in the future |  | 3 |  |  |  | 3 | 13 | 16
Dividends paid to stockholders |  |  |  | (8) |  | (8) |  | (8)
Distributions from IBG LLC to noncontrolling interests |  |  |  |  |  |  | (60) | (60)
Comprehensive Income |  |  |  | 49 | (1) | 48 | 274 | 322
Balance at Mar. 31, 2019 | $ 1 | 901 | (3) | 431 | (5) | 1,325 | 6,101 | 7,426
Balance (in shares) at Mar. 31, 2019 | 75,231,305 |  |  |  |  |  |  |
Common Stock distributed pursuant to stock incentive plans (in shares) | 1,625,479 |  |  |  |  |  |  |
Compensation for stock grants vesting in the future |  | 2 |  |  |  | 2 | 12 | 14
Repurchase of common stock for employee tax withholding under stock incentive plans |  |  | (27) |  |  | (27) |  | (27)
Sales of treasury stock |  |  | 27 |  |  | 27 | (1) | 26
Dividends paid to stockholders |  |  |  | (7) |  | (7) |  | (7)
Distributions from IBG LLC to noncontrolling interests |  |  |  |  |  |  | (38) | (38)
Adjustments for changes in proportionate ownership in IBG LLC |  | 24 |  |  |  | 24 | (24) |
Comprehensive Income |  |  |  | 32 | 4 | 36 | 190 | 226
Balance at Jun. 30, 2019 | $ 1 | 927 | (3) | 456 | (1) | 1,380 | 6,240 | 7,620
Balance (in shares) at Jun. 30, 2019 | 76,856,784 |  |  |  |  |  |  |
Issuance of common stock in follow-on offering (in shares) | 21,075 |  |  |  |  |  |  |
Common Stock distributed pursuant to stock incentive plans (in shares) | 441 |  |  |  |  |  |  |
Compensation for stock grants vesting in the future |  | 3 |  |  |  | 3 | 10 | 13
Dividends paid to stockholders |  |  |  | (8) |  | (8) |  | (8)
Distributions from IBG LLC to noncontrolling interests |  |  |  |  |  |  | (205) | (205)
Comprehensive Income |  |  |  | 36 | (6) | 30 | 203 | 233
Balance at Sep. 30, 2019 | $ 1 | $ 930 | $ (3) | $ 484 | $ (7) | $ 1,405 | $ 6,248 | $ 7,653
Balance (in shares) at Sep. 30, 2019 | 76,878,300 |  |  |  |  |  |  |

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