v3.19.3

Redeemable Convertible Preferred Stock, Common Stock, and Equity (Deficit) - SAR and Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2019 USD ($) $ / shares shares | Dec. 31, 2018 USD ($) $ / shares shares
Share-Based Compensation Arrangement By Share-Based Payment Award, Options And Equity Instruments Other Than Options, Nonvested, Number Of Shares [Abstract] |  |
Weighted-Average Exercise Price Per Share, Outstanding (in dollars per share) | $ / shares | $ 9.22 |
Weighted-Average Exercise Price Per Share, Awards granted (in dollars per share) | $ / shares | 43.00 |
Weighted-Average Exercise Price Per Share, Awards exercised (in dollars per share) | $ / shares | 2.55 |
Weighted-Average Exercise Price Per Share, Awards canceled and forfeited (in dollars per share) | $ / shares | 33.19 |
Weighted-Average Exercise Price Per Share, Outstanding (in dollars per share) | $ / shares | 8.89 | $ 9.22
Weighted-Average Exercise Price Per Share, Vested and expected to vest (in dollars per share) | $ / shares | 4.58 |
Weighted-Average Exercise Price Per Share, Exercisable (in dollars per share) | $ / shares | $ 4.58 |
Share-Based Compensation Arrangement By Share-based Payment Award, Options And Equity Instruments Other Than Options, Nonvested, Additional Disclosures [Abstract] |  |
Weighted-Average Contractual Life, Outstanding | 4 years 10 months 20 days | 5 years 8 months 26 days
Weighted-Average Contractual Life, Vested and expected to vest | 4 years 7 months 17 days |
Weighted-Average Contractual Life, Exercisable | 4 years 7 months 17 days |
Aggregate Intrinsic Value, Outstanding | $ | $ 934 | $ 1,456
Aggregate Intrinsic Value, Vested and expected to vest | $ | 933 |
Aggregate Intrinsic Value, Exercisable | $ | $ 933 |
SARs |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] |  |
Shares outstanding (in shares) | 758 |
Awards granted (in shares) | 86 |
Awards exercised (in shares) | 0 |
Awards canceled and forfeited (in shares) | (13) |
Shares outstanding (in shares) | 831 | 758
Vested and expected to vest (in shares) | 648 |
Exercisable (in shares) | 648 |
Stock options |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |
Options outstanding (in shares) | 42,936 |
Awards granted (in shares) | 250 |
Awards exercised (in shares) | (1,272) |
Awards canceled and forfeited (in shares) | (1,382) |
Options outstanding (in shares) | 40,532 | 42,936
Vested and expected to vest (in shares) | 35,145 |
Exercisable (in shares) | 35,145 |

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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