Analysis Of Income And Expense [Abstract]

NATIONWIDE BUILDING SOCIETY - Filing #1650933

Concept	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	2020-04-05 to 2021-04-04	2020-04-05 to 2021-04-04	2020-04-05 to 2021-04-04	2020-04-05 to 2021-04-04	2020-04-05 to 2021-04-04	2020-04-05 to 2021-04-04	2020-04-05 to 2021-04-04	2020-04-05 to 2021-04-04
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	—	—	—	—	—	27,000,000 GBP	—	—	—	190,000,000 GBP	—	—	—	—	—	—
Interest expense	—	—	—	—	—	950,000,000 GBP	—	—	—	978,000,000 GBP	—	—	—	—	—	—
Interest income (expense)	—	—	—	—	—	3,562,000,000 GBP	—	—	—	3,146,000,000 GBP	—	—	—	—	—	—
Other operating income (expense)	—	—	—	—	—	48,000,000 GBP	—	—	—	9,000,000 GBP	—	—	—	—	—	—
Fee and commission income (expense) [abstract]
Fee and commission income [abstract]
Fee and commission income	—	—	—	—	—	475,000,000 GBP	—	—	—	379,000,000 GBP	—	—	—	—	—	—
Fee and commission expense [abstract]
Fee and commission expense	—	—	—	—	—	218,000,000 GBP	—	—	—	231,000,000 GBP	—	—	—	—	—	—
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	1,795,000,000 GBP	5,000,000 GBP	11,000,000 GBP	- GBP	- GBP	1,772,000,000 GBP	3,000,000 GBP	20,000,000 GBP	- GBP	564,000,000 GBP	4,000,000 GBP	131,000,000 GBP	111,000,000 GBP	546,000,000 GBP	2,000,000 GBP	- GBP