Post employment benefits - Fair value of pension assets (Details) - EUR (€) € in Millions |
12 Months Ended | |||
|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|||
| Post employment benefits | ||||
| Investment fund | € 602 | € 572 | ||
| Actual return on plan assets | 202 | 238 | ||
| Defined Benefit Pension Plan | ||||
| Post employment benefits | ||||
| Cash and cash equivalents | 35 | 61 | ||
| Investment fund | 602 | 572 | ||
| Assets | 4,739 | 4,854 | ||
| Defined Benefit Pension Plan | Level1 of Fair Value Hierarchy [Member] | ||||
| Post employment benefits | ||||
| Equity investments | 450 | 471 | ||
| Debt and derivative instruments: | 1,140 | 1,042 | ||
| Property | 12 | 17 | ||
| Defined Benefit Pension Plan | Level 2 of fair value hierarchy [member] | ||||
| Post employment benefits | ||||
| Equity investments | 35 | 37 | ||
| Debt and derivative instruments: | [1] | 1,599 | 1,719 | |
| Property | 291 | 313 | ||
| Annuity policies | € 575 | € 622 | ||
| ||||
| X | ||||||||||
- Definition The amount cash and cash equivalents contribute to the fair value of defined benefit plan assets. [Refer: Cash and cash equivalents; Plan assets, at fair value; Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The amount instruments representing debt (rather than equity) contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition 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.
|
| X | ||||||||||
- Definition The amount instruments representing equity (rather than debt) contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The amount investment funds contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]; Investment funds [member]] Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The amount real estate contributes to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The amount of other comprehensive income, before tax, resulting from the return on plan assets, excluding amounts included in interest expense (income) arising from defined benefit plans. The return on plan assets is interest, dividends and other revenue derived from the plan assets, together with realised and unrealised gains or losses on the plan assets, less any costs of managing plan assets and less any tax payable by the plan itself, other than tax included in the actuarial assumptions used to measure the present value of the defined benefit obligation. [Refer: Other comprehensive income; Defined benefit plans [domain]; Plan assets [member]; Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans] [Contrast: Decrease (increase) in net defined benefit liability (asset) resulting from return on plan assets excluding interest income or expense] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The amount that annuity policies constitute of the fair value of defined benefit plan assets. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|