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Share Based Compensation - Summary of FV Per Performance Criteria and Program (Detail) - Executive team plans [member] - kr / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value ESG - Environmental	kr 53.61	kr 47.8	kr 71.45
Fair value Group operating income	53.61	47.8	71.45	kr 110.7
Long-term variable compensation program [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share price at grant	61.46	55.59	78.88	116.66
Fair value ESG - Social	53.61	47.8	71.45
Long-term variable compensation program [member] \| Fair Value Absolute T S R [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value absolute TSR	59.05	32.75	41.18	113.47
Long-term variable compensation program [member] \| Fair Value Relative T S R [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value relative TSR	kr 55.61	kr 39.4	kr 54.48	kr 108.61