Statement Of Financial Position [Abstract]

NATIONWIDE BUILDING SOCIETY - Filing #1650933

Concept	As at 2022-04-04	As at 2022-04-04	As at 2022-04-04	As at 2022-04-04	As at 2022-04-04	As at 2022-04-04	As at 2022-04-04	As at 2022-04-04	As at 2021-04-04	As at 2021-04-04	As at 2021-04-04	As at 2021-04-04	As at 2021-04-04	As at 2021-04-04	As at 2021-04-04	As at 2021-04-04	As at 2020-04-04	As at 2020-04-04	As at 2020-04-04	As at 2020-04-04	As at 2020-04-04	As at 2020-04-04	As at 2020-04-04	As at 2020-04-04
Statement of financial position [abstract]
Assets [abstract]
Non-current assets [abstract]
Deferred tax assets	—	—	—	—	—	—	—	59,000,000 GBP	—	—	—	—	—	—	—	72,000,000 GBP	—	—	—	—	—	—	—	—
Current assets [abstract]
Cash and cash equivalents	—	—	—	—	—	—	—	30,824,000,000 GBP	—	—	—	—	—	—	—	17,705,000,000 GBP	—	—	—	—	—	—	—	14,474,000,000 GBP
Assets	—	—	—	—	—	—	—	272,354,000,000 GBP	—	—	—	—	—	—	—	254,914,000,000 GBP	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Equity	46,000,000 GBP	184,000,000 GBP	1,334,000,000 GBP	1,336,000,000 GBP	12,753,000,000 GBP	43,000,000 GBP	89,000,000 GBP	15,699,000,000 GBP	44,000,000 GBP	195,000,000 GBP	1,334,000,000 GBP	1,336,000,000 GBP	11,140,000,000 GBP	46,000,000 GBP	110,000,000 GBP	14,113,000,000 GBP	48,000,000 GBP	306,000,000 GBP	1,325,000,000 GBP	593,000,000 GBP	10,749,000,000 GBP	42,000,000 GBP	17,000,000 GBP	12,962,000,000 GBP
Liabilities [abstract]
Non-current liabilities [abstract]
Deferred tax liabilities	—	—	—	—	—	—	—	430,000,000 GBP	—	—	—	—	—	—	—	150,000,000 GBP	—	—	—	—	—	—	—	—
Liabilities	—	—	—	—	—	—	—	256,655,000,000 GBP	—	—	—	—	—	—	—	240,801,000,000 GBP	—	—	—	—	—	—	—	—
Equity and liabilities	—	—	—	—	—	—	—	272,354,000,000 GBP	—	—	—	—	—	—	—	254,914,000,000 GBP	—	—	—	—	—	—	—	—