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v3.10.0.1

Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions | Total | Preferred stock | Class A and Class B common stock | Additional paid-in capital | Accumulated deficit | Accumulated other comprehensive income (loss)
--- | --- | --- | --- | --- | --- | ---
Shares outstanding, beginning of the period (in shares) at Dec. 31, 2015 |  | 147.6 | 187.3 |  |  |
Shareholders equity, beginning balance at Dec. 31, 2015 | $ 185.6 | $ 615.3 | $ 0.0 | $ 297.3 | $ (727.3) | $ 0.3
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Vesting of early exercised stock options | 0.5 |  |  | 0.5 |  |
Issuance of common stock, options and awards related to acquisitions (in shares) |  |  | 0.1 |  |  |
Issuance of common stock, options and awards related to acquisitions | 0.7 |  |  | 0.7 |  |
Repurchase of unvested common stock (related to early exercised stock options) (in shares) |  |  | (0.3) |  |  |
Repurchase of unvested common stock (related to early exercised stock options) | (0.1) |  |  | (0.1) |  |
Stock-based compensation | 147.6 |  |  | 147.6 |  |
Other comprehensive income (loss) | (1.3) |  |  |  |  | (1.3)
Net loss | (210.2) |  |  |  | (210.2) |
Shareholders equity, ending balance at Dec. 31, 2016 | $ 122.8 | $ 615.3 | $ 0.0 | 446.0 | (937.5) | (1.0)
Shares outstanding, end of the period (in shares) at Dec. 31, 2016 |  | 147.6 | 187.1 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Cumulative-effect adjustment from adoption of ASU 2016-09 |  |  |  | 0.5 | (0.5) |
Release of restricted stock units (in shares) |  |  | 14.6 |  |  |
Shares repurchased for tax withholdings on release of restricted stock (in shares) | (5.5) |  | (5.5) |  |  |
Shares repurchased for tax withholdings on release of restricted stock | $ (87.9) |  |  | (87.9) |  |
Donation of common stock to charitable foundation (in shares) |  |  | 0.6 |  |  |
Donation of common stock to charitable foundation | $ 9.4 |  |  | 9.4 |  |
Exercise of stock options and awards (in shares) | 0.1 |  | 0.2 |  |  |
Exercise of stock options and awards | $ 0.5 |  |  | 0.5 |  |
Repurchase of unvested common stock (related to early exercised stock options) (in shares) |  |  | (0.2) |  |  |
Stock-based compensation | 164.6 |  |  | 164.6 |  |
Other comprehensive income (loss) | 5.2 |  |  |  |  | 5.2
Net loss | (111.7) |  |  |  | (111.7) |
Shareholders equity, ending balance at Dec. 31, 2017 | $ 102.9 | $ 615.3 | $ 0.0 | 533.1 | (1,049.7) | 4.2
Shares outstanding, end of the period (in shares) at Dec. 31, 2017 |  | 147.6 | 196.8 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Release of restricted stock units (in shares) |  |  | 40.4 |  |  |
Shares repurchased for tax withholdings on release of restricted stock (in shares) | (15.6) |  | (15.6) |  |  |
Shares repurchased for tax withholdings on release of restricted stock | $ (351.8) |  |  | (226.9) | (124.9) |
Conversion of preferred stock to common stock in connection with initial public offering (in shares) |  | (147.6) | 147.6 |  |  |
Conversion of preferred stock to common stock in connection with initial public offering |  | $ (615.3) |  | 615.3 |  |
Issuance of common stock in connection with initial public offering and private placement, net of underwriters' discounts and commissions and issuance costs (in shares) |  |  | 37.0 |  |  |
Issuance of common stock in connection with initial public offering and private placement, net of underwriters' discounts and commissions and issuance costs | $ 739.7 |  |  | 739.7 |  |
Exercise of stock options and awards (in shares) | 3.4 |  | 3.4 |  |  |
Exercise of stock options and awards | $ 26.2 |  |  | 26.2 |  |
Stock-based compensation | 650.1 |  |  | 650.1 |  |
Other comprehensive income (loss) | (5.4) |  |  |  |  | (5.4)
Net loss | (484.9) |  |  |  |  |
Shareholders equity, ending balance at Dec. 31, 2018 | $ 676.8 | $ 0.0 | $ 0.0 | $ 2,337.5 | $ (1,659.5) | $ (1.2)
Shares outstanding, end of the period (in shares) at Dec. 31, 2018 |  | 0.0 | 409.6 |  |  |

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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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