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Revenue by Geographic Area and Groups of Similar Products - Revenue by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue by geographic area:
Revenue	$ 4,153,945	$ 3,826,321	$ 2,841,839
Twilio Segment
Revenue by geographic area:
Revenue	295,252	276,234	200,965
Twilio Communications | Twilio Communications
Revenue by geographic area:
Revenue	3,858,693	3,550,087	2,640,874
Messaging | Twilio Communications
Revenue by geographic area:
Revenue	2,184,752	2,066,300	1,416,265
Voice | Twilio Communications
Revenue by geographic area:
Revenue	511,728	474,790	428,484
Email and Marketing Campaigns | Twilio Communications
Revenue by geographic area:
Revenue	440,185	399,314	330,627
Other | Twilio Communications
Revenue by geographic area:
Revenue	722,028	609,683	465,498
United States
Revenue by geographic area:
Revenue	$ 2,757,470	$ 2,510,525	$ 1,927,302
United States | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Percentage of revenue by geographic area:
Percentage of revenue	66.00%	66.00%	68.00%
International
Revenue by geographic area:
Revenue	$ 1,396,475	$ 1,315,796	$ 914,537
International | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Percentage of revenue by geographic area:
Percentage of revenue	34.00%	34.00%	32.00%

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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