Awards Received, Exercise Price Equal to Percenatge of Fair Value, Percentage

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- Definition

Expected Time Period to Repurchase Shares from Stock held by Joint Venture

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- Definition

Percentage of Awards Exchanged for Vested Options

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No definition available.

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- Definition

Percentage of Awards Liquidated for Cash

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Tranches

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- Definition

Share-based compensation, Liquidity event, percentage threshold of shares sold

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

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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- Definition

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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- Definition

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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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

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

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- Definition

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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Incentive Compensation Plans (Narrative) (Details)	12 Months Ended
Incentive Compensation Plans (Narrative) (Details)	Mar. 31, 2020 USD ($) item shares	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)
Legacy CHC Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance \| shares	37,900,000
Expected time period to repurchase shares from stock held by Joint Venture	6 months
Liquidity event, percentage threshold of shares sold	25.00%
Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance \| shares	25,000,000
Granted in period \| shares	1
Compensation expense	$ 1,701,000
Unrecognized compensation expense	$ 89,182,000
Time-Vesting Options [Member] \| Legacy CHC Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| item	4
Unrecognized compensation expense	$ 3,611,000
Unrecognized compensation expense period for recognition	1 year 3 months 18 days
Time-Vesting Options [Member] \| Legacy CHC Equity Plan [Member] \| Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of awards liquidated for cash	54.40%
Percentage of awards exchanged for vested options	45.60%
Awards received as, exercise price equal to percentage of fair value, percentage	25.00%
Vesting percentage	25.00%
Time-Vesting Options [Member] \| Legacy CHC Equity Plan [Member] \| Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Time-Vesting Options [Member] \| Legacy CHC Equity Plan [Member] \| Share-based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Time-Vesting Options [Member] \| Legacy CHC Equity Plan [Member] \| Share-based Payment Arrangement, Tranche Four [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Exit-Vesting Options [Member] \| Legacy CHC Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of awards liquidated for cash	54.40%
Percentage of awards exchanged for vested options	45.60%
Awards received as, exercise price equal to percentage of fair value, percentage	25.00%
Number of tranches \| item	3
Compensation expense		$ 0
Restricted Stock Units (RSUs) [Member] \| Legacy CHC Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of awards liquidated for cash	54.40%
Fair value of shares vested	$ 0	$ 0	$ 1,440,000
Restricted Stock Units (RSUs) [Member] \| Omnibus Incentive Plan [Member] \| Graded Vesting Schedule [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Restricted Stock Units (RSUs) [Member] \| Omnibus Incentive Plan [Member] \| Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Performance Stock Units PSU [Member] \| Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| item	2
Performance Stock Units PSU [Member] \| Omnibus Incentive Plan [Member] \| Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Cash Settled Restricted Stock Units CSRSU [Member] \| Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Deferred Stock Units DSU [Member] \| Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Vesting percentage	100.00%
Joint Venture [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 0
Minimum [Member] \| Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Minimum [Member] \| Restricted Stock Units (RSUs) [Member] \| Omnibus Incentive Plan [Member] \| Cliff Vesting Schedule [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Maximum [Member] \| Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Maximum [Member] \| Restricted Stock Units (RSUs) [Member] \| Omnibus Incentive Plan [Member] \| Cliff Vesting Schedule [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Blackstone [Member] \| Joint Venture [Member] \| Exit-Vesting Options [Member] \| Legacy CHC Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Liquidity event, percentage threshold of shares sold	25.00%
McKesson Corporation [Member] \| Joint Venture [Member] \| Exit-Vesting Options [Member] \| Legacy CHC Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Liquidity event, percentage threshold of shares sold	50.00%
Blackstone And McKesson [Member] \| Joint Venture [Member] \| Exit-Vesting Options [Member] \| Legacy CHC Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Liquidity event, percentage threshold of shares sold	25.00%