Share-Based Compensation - Additional Information (Details) - USD ($) $ in Millions		1 Months Ended	5 Months Ended	12 Months Ended
	Jan. 29, 2014	Sep. 30, 2013	Jan. 29, 2014	Dec. 31, 2025	Dec. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted (in shares)				0	0
2013 Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Available for future grants (in shares)				6,854,792
Maximum employee subscription rate (percent)				15.00%
Maximum number of share per employee (in shares)				3,000
Offering period (in months)				6 months
Additional shares reserved for future issuance (in shares)				907,179
Unrecognized share-based compensation expense				$ 2.7	$ 2.5
Unrecognized share-based compensation expense, remaining weighted-average vesting periods (in years)				4 months 24 days
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation expense, remaining weighted-average vesting periods (in years)				1 year 6 months	2 years 1 month 6 days
Unrecognized share-based compensation expense				$ 147.4	$ 250.4
Restricted Stock Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period contractual term (in years)				2 years
Restricted Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period contractual term (in years)				4 years
Performance stock units (“PSUs”)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation expense, remaining weighted-average vesting periods (in years)				9 months 18 days	10 months 24 days
Unrecognized share-based compensation expense				$ 18.9	$ 22.5
Performance stock units (“PSUs”) \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period contractual term (in years)				2 years
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage				0.00%
Performance stock units (“PSUs”) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period contractual term (in years)				3 years
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage				200.00%
Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares reserved for future issuance (in shares)				75,394,000	80,913,000
Common Class A \| 2013 Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares reserved for future issuance (in shares)				1,250,000
Percentage of outstanding shares (percent)				1.00%
Common Class A \| Tranche One \| 2013 Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common stock (as a percentage of fair value)				85.00%
Common Class A \| Tranche Two \| 2013 Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common stock (as a percentage of fair value)				85.00%
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of outstanding shares (percent)		5.00%
Available for future grants (in shares)				14,229,173
Vesting period contractual term (in years)	7 years		4 years
2013 Equity Incentive Plan \| Post January 29, 2014 \| Previously Reported
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period contractual term (in years)			10 years
2013 Equity Incentive Plan \| Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares reserved for future issuance (in shares)		6,200,000
Common stock, additional shares reserved (in shares)		6,200,000		4,535,897
Key Employee Equity Bonus Plan \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation expense, remaining weighted-average vesting periods (in years)				1 month 6 days
Unrecognized share-based compensation expense				$ 3.9
Number of shares issued (in shares)				1,465,154	1,395,903
Share based compensation requisite service period recognition (in years)				4 months 24 days

RingCentral, Inc. 10-K