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Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Amount

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Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Purchased

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Share-Based Compensation Arrangements By Share-Based Payment Award, Options, Purchased In Period, Weighted Average Price

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Share-Based Payment Arrangement, Award, Excluding Option, Cost Not Yet Recognized, Amount

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Percent Eligible for Time-based Vesting

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Share-based Compensation Arrangement by Share-based Payment Award, Trading Days

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Aggregate number of common shares reserved for future issuance.

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Amount of cost for defined contribution plan.

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Percentage employer matches of the employee's percentage contribution matched.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Percentage of vesting of award under share-based payment arrangement.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Purchase price of common stock expressed as a percentage of its fair value.

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Employee Benefits and Share-Based Compensation - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)	6,428,000
Omnicell Plan \| Other Postretirement Benefit Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employer matching contribution, percent of employee contribution	50.00%
Maximum amount of employer contribution	$ 3,000
401(k) contributions	$ 6,800,000	$ 5,700,000	$ 5,100,000
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)	919,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)	2,954,000
1997 Plan \| ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum percentage of earnings allowed for purchase of shares	15.00%
Maximum fair market value of shares	$ 25,000
Purchase price of common stock, percent	85.00%
Offering period	24 months
Purchasing period	6 months
Shares reserved for future issuance (in shares)	900,000
Shares purchased under ESPP (in shares)	287,000	333,000
Weighted-average price (in dollars per share)	$ 62.14	$ 48.77
Unrecognized compensation cost	$ 1,900,000
Weighted average period of compensation cost recognized	1 year 3 months 18 days
2009 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)	5,500,000
Income tax benefit from share-based compensation	$ 26,600,000	$ 10,300,000	$ 11,000,000
2009 Plan \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Weighted-average fair value per share (in dollars per share)	$ 35.17	$ 26.48	$ 23.54
Intrinsic value of options exercised	$ 88,000,000	$ 39,800,000	$ 32,800,000
Tax benefit realized from stock options exercised	18,300,000	$ 7,100,000	$ 6,300,000
Unrecognized compensation cost of unvested stock options	$ 33,800,000
Weighted average period of compensation cost recognized	2 years 2 months 12 days
2009 Plan \| Stock Options \| Vesting One Year from Commencement Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Percentage of award vesting	25.00%
2009 Plan \| Stock Options \| Vesting in Equal Monthly Installments
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	36 months
2009 Plan \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Weighted average period of compensation cost recognized	3 years 1 month 6 days
Weighted-average grant date fair value per award granted (in dollars per share)	$ 149.65	$ 74.52	$ 78.49
Fair value of awards vested	$ 16,700,000	$ 11,200,000	$ 10,600,000
Total unrecognized compensation cost	$ 76,800,000
Awards granted (in shares)	481,000
2009 Plan \| RSUs \| Vesting One Year from Commencement Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Percentage of award vesting	25.00%
2009 Plan \| RSUs \| Vesting in Equal Monthly Installments
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
2009 Plan \| RSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period of compensation cost recognized	4 months 24 days
Weighted-average grant date fair value per award granted (in dollars per share)	$ 137.36	$ 68.11	$ 81.86
Fair value of awards vested	$ 1,400,000	$ 1,400,000	$ 1,000,000
Total unrecognized compensation cost	$ 600,000
Awards granted (in shares)	11,000
2009 Plan \| PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Weighted average period of compensation cost recognized	1 year 2 months 12 days
Weighted-average grant date fair value per award granted (in dollars per share)	$ 162.16	$ 82.17	$ 73.38
Total unrecognized compensation cost	$ 7,500,000
Awards granted (in shares)	68,000
Trading days used for stock price appreciation calculation	20 days
Fair value of awards vested	$ 4,400,000	$ 3,700,000	$ 3,500,000
2009 Plan \| PSUs \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares eligible for time-based vesting	0.00%
2009 Plan \| PSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares eligible for time-based vesting	200.00%
2009 Plan \| PSUs \| Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	51,110	62,759
2009 Plan \| PSUs \| Vesting One Year from Commencement Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Percentage of award vesting	25.00%
2009 Plan \| PSUs \| Vesting in Equal Semi-Annual Installments, Period One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	6 months
2009 Plan \| PSUs \| Vesting in Equal Semi-Annual Installments, Period Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	6 months
2009 Plan \| PSUs \| Vesting in Equal Semi-Annual Installments, Period Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	6 months
2009 Plan \| PSUs \| Vesting in Equal Semi-Annual Installments, Period Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	6 months
2009 Plan \| PSUs \| Vesting in Equal Semi-Annual Installments, Period Five
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	6 months
2009 Plan \| PSUs \| Vesting in Equal Semi-Annual Installments, Period Six
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	6 months