XML 66 R52.htm IDEA: XBRL DOCUMENT v3.25.0.1

Share Plans (Tables)

12 Months Ended

Dec. 31, 2024

Share-Based Payment Arrangement [Abstract]

Schedule of Movement in Number of Shares Held by ESOP Trustees

			In millions
			At January 1, 2023			$	(1.0)
			Utilization of ESOP shares			0.1
			At December 31, 2023			(0.9)
			Utilization of ESOP shares			0.1
			At December 31, 2024			$	(0.8)

The change in the number of shares held by the Trustees of the ESOP and the number of share options held over those shares are shown below:

Number of shares held by ESOP Trustees

£0.50 ordinary shares

At January 1, 2024

635,801

Shares utilized during the year

(91,198)

At December 31, 2024

544,603

Schedule of Share-based Compensation Expense

Total share-based compensation expense for 2024, 2023 and 2022 was as follows:

						Years ended December 31,
			In millions			2024						2023						2022
			Total share-based compensation charges			$	3.5					$	2.8					$	2.5

Share-based Compensation, Stock Options, Activity

The following tables illustrates the number of, and movements in, share options during the year, with each option relating to one ordinary share:

						Number of shares						Weighted- average exercise price						Weighted- average remaining contractual life (years)						Aggregate intrinsic value ($M)
			At January 1, 2024			713,097						$	1.00					3.0						$	6.4
			Granted during the year			595,286						$	1.00
			Exercised during the year			(138,146)						$	1.00
			Accrued dividend awards			15,979						$	1.00
			Lapsed during the year			(61,024)						$	1.00
			At December 31, 2024			1,125,192						$	1.00					2.1						$	14.7
			Options exercisable at December 31, 2024			17,851						$	1.00					2.6						$	0.2
			Options expected to vest as of December 31, 2024			733,525						$	1.00					2.2						$	9.6

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following table illustrates the assumptions used in deriving the fair value of share options during the year:

						2024						2023						2022
			Dividend yield (%)			4.40 - 6.03						3.15 - 3.32						2.75 3.41
			Expected volatility range (%)			36.40 - 45.79						31.54 - 43.49						36.11 - 49.43
			Risk-free interest rate (%)			3.87 - 5.08						3.67 - 5.16						1.28 - 2.99
			Expected life of share options range (years)			1.00 - 4.00						1.00 - 4.00						0.50 - 4.00
			Forfeiture rate (%)			5.00						5.00						5.00
			Weighted average exercise price ($)			$1.00						$1.00						$1.00
			Models used			Black-Scholes & Monte-Carlo						Black-Scholes & Monte-Carlo						Black-Scholes & Monte-Carlo

X

- References

No definition available.

+ Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the details pertaining to each employee stock ownership plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480489/718-40-50-1

+ Details

Name:	us-gaap_ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Subparagraph (f)(2)
-Name Accounting Standards Codification
-Paragraph 2
-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration