Statement Of Comprehensive Income [Abstract]

Bank of Ireland GP - Filing #5617060

Concept	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31
Statement of comprehensive income [abstract]
Profit (loss)	– EUR	– EUR	897,000,000 EUR	889,000,000 EUR	8,000,000 EUR	– EUR	– EUR	– EUR	– EUR	– EUR	889,000,000 EUR	– EUR	– EUR	7,000,000 EUR	– EUR	– EUR	– EUR	1,048,000,000 EUR	– EUR	– EUR	– EUR	– EUR	– EUR	– EUR	1,055,000,000 EUR	1,048,000,000 EUR
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract]
Other comprehensive income, net of tax, gains (losses) on revaluation of property, plant and equipment, right-of-use assets and intangible assets	—	—	3,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	– EUR	—
Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans	—	—	91,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	597,000,000 EUR	—
Other comprehensive income, net of tax, change in fair value of financial liability attributable to change in credit risk of liability	—	—	15,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	5,000,000 EUR	—
Other comprehensive income that will not be reclassified to profit or loss, net of tax	—	—	103,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	592,000,000 EUR	—
Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract]
Exchange differences on translation [abstract]
Gains (losses) on exchange differences on translation of foreign operations, net of tax	—	—	93,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	183,000,000 EUR	—
Reclassification adjustments on exchange differences on translation of foreign operations, net of tax	—	—	– EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,000,000 EUR	—
Other comprehensive income, net of tax, exchange differences on translation of foreign operations	—	—	93,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	184,000,000 EUR	—
Cash flow hedges [abstract]
Gains (losses) on cash flow hedges, net of tax	—	—	309,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	801,000,000 EUR	—
Reclassification adjustments on cash flow hedges, net of tax	—	—	304,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	791,000,000 EUR	—
Other comprehensive income, net of tax, cash flow hedges	—	—	5,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	10,000,000 EUR	—
Financial assets measured at fair value through other comprehensive income [abstract]
Gains (losses) on financial assets measured at fair value through other comprehensive income, net of tax	—	—	61,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	20,000,000 EUR	—
Reclassification adjustments on financial assets measured at fair value through other comprehensive income, net of tax	—	—	85,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	14,000,000 EUR	—
Other comprehensive income, net of tax, financial assets measured at fair value through other comprehensive income	—	—	146,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	34,000,000 EUR	—
Other comprehensive income that will be reclassified to profit or loss, net of tax	—	—	234,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	140,000,000 EUR	—
Other comprehensive income	– EUR	– EUR	131,000,000 EUR	91,000,000 EUR	– EUR	5,000,000 EUR	12,000,000 EUR	– EUR	– EUR	146,000,000 EUR	131,000,000 EUR	– EUR	93,000,000 EUR	– EUR	10,000,000 EUR	– EUR	5,000,000 EUR	732,000,000 EUR	– EUR	184,000,000 EUR	– EUR	34,000,000 EUR	– EUR	– EUR	732,000,000 EUR	597,000,000 EUR
Comprehensive income	– EUR	– EUR	766,000,000 EUR	980,000,000 EUR	8,000,000 EUR	5,000,000 EUR	12,000,000 EUR	– EUR	– EUR	146,000,000 EUR	758,000,000 EUR	– EUR	93,000,000 EUR	7,000,000 EUR	10,000,000 EUR	– EUR	5,000,000 EUR	1,780,000,000 EUR	– EUR	184,000,000 EUR	– EUR	34,000,000 EUR	– EUR	– EUR	1,787,000,000 EUR	1,645,000,000 EUR
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	758,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,780,000,000 EUR	—
Comprehensive income, attributable to non-controlling interests	—	—	8,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	7,000,000 EUR	—