Analysis Of Income And Expense [Abstract]

NATIONWIDE BUILDING SOCIETY - Filing #4393884

Concept	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	2021-04-05 to 2022-04-04	2021-04-05 to 2022-04-04	2021-04-05 to 2022-04-04	2021-04-05 to 2022-04-04	2021-04-05 to 2022-04-04	2021-04-05 to 2022-04-04	2021-04-05 to 2022-04-04	2021-04-05 to 2022-04-04
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	—	—	—	—	—	126,000,000 GBP	—	—	—	—	—	—	27,000,000 GBP	—	—	—
Investment income	—	—	—	—	—	- GBP	—	—	—	—	—	—	- GBP	—	—	—
Interest expense	—	—	—	—	—	4,327,000,000 GBP	—	—	—	—	—	—	950,000,000 GBP	—	—	—
Interest income (expense)	—	—	—	—	—	4,498,000,000 GBP	—	—	—	—	—	—	3,562,000,000 GBP	—	—	—
Fee and commission income (expense) [abstract]
Fee and commission income [abstract]
Fee and commission income	—	—	—	—	—	432,000,000 GBP	—	—	—	—	—	—	475,000,000 GBP	—	—	—
Fee and commission expense [abstract]
Fee and commission expense	—	—	—	—	—	311,000,000 GBP	—	—	—	—	—	—	218,000,000 GBP	—	—	—
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	1,608,000,000 GBP	1,000,000 GBP	8,000,000 GBP	- GBP	- GBP	1,494,000,000 GBP	4,000,000 GBP	103,000,000 GBP	3,000,000 GBP	1,795,000,000 GBP	5,000,000 GBP	11,000,000 GBP	1,772,000,000 GBP	- GBP	- GBP	20,000,000 GBP