Analysis Of Income And Expense [Abstract]

NATIONWIDE BUILDING SOCIETY - Filing #4370996

Concept	2023-04-05 to 2024-04-04	2023-04-05 to 2024-04-04	2023-04-05 to 2024-04-04	2023-04-05 to 2024-04-04	2023-04-05 to 2024-04-04	2023-04-05 to 2024-04-04	2023-04-05 to 2024-04-04	2023-04-05 to 2024-04-04	2022-04-05 to 2023-04-04	2022-04-05 to 2023-04-04	2022-04-05 to 2023-04-04	2022-04-05 to 2023-04-04	2022-04-05 to 2023-04-04	2022-04-05 to 2023-04-04	2022-04-05 to 2023-04-04	2022-04-05 to 2023-04-04
Analysis of income and expense [abstract]
Material income and expense [abstract]
Impairment loss (reversal of impairment loss) recognised in profit or loss, loans and advances [abstract]
Impairment loss (reversal of impairment loss) recognised in profit or loss, loans and advances	—	112,000,000 GBP	—	—	—	—	—	—	—	—	—	—	126,000,000 GBP	—	—	—
Investment income	—	- GBP	—	—	—	—	—	—	—	—	—	—	- GBP	—	—	—
Interest expense	—	9,575,000,000 GBP	—	—	—	—	—	—	—	—	—	—	4,327,000,000 GBP	—	—	—
Interest income (expense)	—	4,450,000,000 GBP	—	—	—	—	—	—	—	—	—	—	4,498,000,000 GBP	—	—	—
Fee and commission income (expense) [abstract]
Fee and commission income [abstract]
Fee and commission income	—	426,000,000 GBP	—	—	—	—	—	—	—	—	—	—	432,000,000 GBP	—	—	—
Fee and commission expense [abstract]
Fee and commission expense	—	292,000,000 GBP	—	—	—	—	—	—	—	—	—	—	311,000,000 GBP	—	—	—
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	2,000,000 GBP	1,031,000,000 GBP	49,000,000 GBP	- GBP	- GBP	4,000,000 GBP	24,000,000 GBP	1,110,000,000 GBP	1,608,000,000 GBP	1,000,000 GBP	8,000,000 GBP	- GBP	1,494,000,000 GBP	- GBP	4,000,000 GBP	103,000,000 GBP