Name:	fms_AssumedTargetAchievementForPerformanceTargetTotalShareholderReturnComparedToCompetitors
Namespace Prefix:	fms_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement as cash-settled share-based payment transaction.

No definition available.

Name:	fms_NumberOfInstrumentsOtherEquityInstrumentsGrantedCashSettledShareBasedPaymentTransaction
Namespace Prefix:	fms_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement as equity-settled share-based payment transaction.

No definition available.

Name:	fms_NumberOfInstrumentsOtherEquityInstrumentsGrantedEquitySettledShareBasedPaymentTransaction
Namespace Prefix:	fms_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

Represents the percentage of annual target achievement under the share-based payment arrangement.

No definition available.

Name:	fms_ShareBasedPaymentArrangementAnnualTargetAchievementLevelPercentage
Namespace Prefix:	fms_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Represents the percentage of cap on grant value under the share-based payment arrangement.

No definition available.

Name:	fms_ShareBasedPaymentArrangementGrantValueCapPercentage
Namespace Prefix:	fms_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Represents the number of performance targets under the share-based payment arrangement.

No definition available.

Name:	fms_ShareBasedPaymentArrangementNumberOfPerformanceTargets
Namespace Prefix:	fms_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Represents the period prior to the lapse of this vesting period, considered for calculation of average share price, under the share based payment arrangement.

No definition available.

Name:	fms_ShareBasedPaymentArrangementPeriodConsideredForCalculationOfAverageSharePrice
Namespace Prefix:	fms_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The weighted average fair value of awards granted during the period at the measurement date in share-based payment arrangement.

No definition available.

Name:	fms_TotalFairValueAtMeasurementDateAwardsGrantedShareBasedPaymentArrangement
Namespace Prefix:	fms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The vesting life of awards in a share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	fms_VestingLifeOfShareBasedAwards
Namespace Prefix:	fms_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the weight of annual target achievement for Co2e reduction.

No definition available.

Name:	fms_WeightOfAnnualTargetAchievementForCo2eReduction
Namespace Prefix:	fms_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Weight of relative total shareholder return performance target

No definition available.

Name:	fms_WeightOfRelativeTotalShareholderReturnPerformanceTarget
Namespace Prefix:	fms_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Weight of return on invested capital performance target.

No definition available.

Name:	fms_WeightOfReturnOnInvestedCapitalPerformanceTarget
Namespace Prefix:	fms_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Weight of Sustainability Performance Target

No definition available.

Name:	fms_WeightOfSustainabilityPerformanceTarget
Namespace Prefix:	fms_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

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

No definition available.

Name:	ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2024-01-01
-Paragraph 45
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2024-01-01
-Paragraph 47
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

The weighted average fair value at the measurement date of granted equity instruments other than share options. [Refer: Weighted average [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2024-01-01
-Paragraph 47
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2024-03-27