Statement Of Changes In Equity [Abstract]

Bank of Ireland GP - Filing #1995683

Concept	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 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	As at 2022-01-01	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	10,285,000,000 EUR	30,000,000 EUR	—	—	—	—	3,000,000 EUR	—	456,000,000 EUR	—	1,057,000,000 EUR	757,000,000 EUR	593,000,000 EUR	—	43,000,000 EUR	22,000,000 EUR	966,000,000 EUR	—	—	—	—	—	12,561,000,000 EUR	—	7,000,000 EUR	11,592,000,000 EUR	—	—	50,000,000 EUR	527,000,000 EUR	67,000,000 EUR	10,489,000,000 EUR	527,000,000 EUR	410,000,000 EUR	9,230,000,000 EUR	– EUR	50,000,000 EUR	456,000,000 EUR	1,070,000,000 EUR	17,000,000 EUR	9,640,000,000 EUR	– EUR	– EUR	– EUR	– EUR	410,000,000 EUR	– EUR	– EUR	– EUR	– EUR	410,000,000 EUR	10,000,000 EUR	50,000,000 EUR	966,000,000 EUR	10,899,000,000 EUR	31,000,000 EUR	—	786,000,000 EUR	527,000,000 EUR	11,932,000,000 EUR	67,000,000 EUR	– EUR	17,000,000 EUR	966,000,000 EUR	31,000,000 EUR	—	11,522,000,000 EUR	—	31,000,000 EUR	966,000,000 EUR	17,000,000 EUR	786,000,000 EUR	11,522,000,000 EUR	10,000,000 EUR	1,070,000,000 EUR	456,000,000 EUR	67,000,000 EUR	456,000,000 EUR	9,230,000,000 EUR	10,000,000 EUR	1,070,000,000 EUR	786,000,000 EUR	10,489,000,000 EUR	—	—	—	—	—	—	—	—	10,967,000,000 EUR	– EUR	509,000,000 EUR	38,000,000 EUR	1,079,000,000 EUR	– EUR	– EUR	– EUR	– EUR	11,338,000,000 EUR	68,000,000 EUR	966,000,000 EUR	38,000,000 EUR	509,000,000 EUR	10,304,000,000 EUR	20,000,000 EUR	129,000,000 EUR	8,842,000,000 EUR	693,000,000 EUR	36,000,000 EUR	456,000,000 EUR	693,000,000 EUR	8,471,000,000 EUR	456,000,000 EUR	– EUR	20,000,000 EUR	966,000,000 EUR	– EUR	129,000,000 EUR	36,000,000 EUR	10,967,000,000 EUR	9,933,000,000 EUR	– EUR	1,079,000,000 EUR	– EUR	68,000,000 EUR	– EUR	371,000,000 EUR	371,000,000 EUR	371,000,000 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	—	6,000,000 EUR	1,595,000,000 EUR	– EUR	– EUR	—	– EUR	—	– EUR	—	—	—	– EUR	—	—	—	– EUR	– EUR	1,601,000,000 EUR	– EUR	– EUR	—	1,595,000,000 EUR	—	—	– EUR	– EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	– EUR	—	—	—	—	—	—	—	—	– EUR	—	858,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	850,000,000 EUR	– EUR	850,000,000 EUR	8,000,000 EUR	– EUR	– EUR	– EUR	– EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	—	– EUR	28,000,000 EUR	– EUR	20,000,000 EUR	—	29,000,000 EUR	—	– EUR	—	—	—	– EUR	—	—	—	5,000,000 EUR	12,000,000 EUR	36,000,000 EUR	– EUR	– EUR	—	36,000,000 EUR	—	—	– EUR	– EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	146,000,000 EUR	—	—	—	—	—	—	—	—	– EUR	—	131,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	131,000,000 EUR	93,000,000 EUR	91,000,000 EUR	– EUR	5,000,000 EUR	12,000,000 EUR	– EUR	– EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	—	6,000,000 EUR	1,567,000,000 EUR	– EUR	20,000,000 EUR	—	29,000,000 EUR	—	– EUR	—	—	—	– EUR	—	—	—	5,000,000 EUR	12,000,000 EUR	1,565,000,000 EUR	– EUR	– EUR	—	1,559,000,000 EUR	—	—	– EUR	– EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	146,000,000 EUR	—	—	—	—	—	—	—	—	– EUR	—	727,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	719,000,000 EUR	93,000,000 EUR	941,000,000 EUR	8,000,000 EUR	5,000,000 EUR	12,000,000 EUR	– EUR	– EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	—	– EUR	225,000,000 EUR	– EUR	– EUR	—	– EUR	—	– EUR	—	—	—	– EUR	—	—	—	– EUR	– EUR	225,000,000 EUR	– EUR	– EUR	—	225,000,000 EUR	—	—	– EUR	– EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	– EUR	—	—	—	—	—	—	—	—	– EUR	—	54,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	54,000,000 EUR	– EUR	54,000,000 EUR	– EUR	– EUR	– EUR	– EUR	– EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—