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Employee benefits
12 Months Ended
Sep. 30, 2024
Employee Benefits [Abstract]  
Employee benefits Employee benefits
The Company operates various post-employment plans, including defined benefit and defined contribution pension plans as well as other benefit plans for its employees.
DEFINED BENEFIT PLANS
The Company operates defined benefit pension plans primarily for the benefit of employees in the U.K., France and Germany, with smaller plans in other countries. The benefits are based on pensionable salary and years of service and most of them are funded with assets held in separate funds.
The defined benefit plans expose the Company to interest risk, inflation risk, longevity risk, currency risk and market investment risk.
The following description focuses mainly on plans registered in the U.K., France and Germany:
U.K.
In the U.K., the Company has three defined benefit pension plans, the CMG U.K. Pension Scheme, the Logica U.K. Pension & Life Assurance Scheme and the Logica Defined Benefit Pension Plan.
The CMG U.K. Pension Scheme is closed to new employees and is closed to further accrual of rights for existing employees. The Logica U.K. Pension & Life Assurance Scheme is still open but only for employees who come from the civil service with protected pensions. The Logica Defined Benefit Pension Plan is closed to new employees and is closed to further accrual of rights for existing employees. The plan was created to mirror the Electricity Supply Pension Scheme and was created for employees that worked for National Grid and Welsh Water with protected benefits.
Both the Logica U.K. Pension & Life Assurance Scheme and the Logica Defined Benefit Pension Plan are employer and employee based contribution plans.
The trustees are the custodians of the defined benefit pension plans and are responsible for the plan administration, including investment strategies. The trustees review periodically the investment and the asset allocation policies. As such, the CMG U.K. Pension Scheme policy is to target an allocation up to a maximum of 65% to return-seeking assets such as equities; the Logica U.K. Pension & Life Assurance Scheme policy is to invest 15% of the scheme assets in equities and 85% in bonds; and the Logica Defined Benefit Pension Plan policy is to invest 10% of the plan assets in equities and 90% in bonds.
The U.K. Pensions Act 2004 requires that full formal actuarial valuations are carried out at least every three years to determine the contributions that the Company should pay in order for the plan to meet its statutory objective, taking into account the assets already held. In the interim years, the trustees need to obtain estimated funding updates unless the scheme has less than 100 employees in total.
The new funding actuarial valuations of the three defined benefit pension plans described above are being performed as at September 30, 2024 and the results are expected to be available by the end of the 2025 fiscal year. In the meantime, the Company followed the last funding actuarial valuations from 2022 as at September 30, 2024:

The actuarial valuation of the CMG U.K. Pension Scheme reported a surplus of $36,812,000. It specified that no supplementary contributions were required in order to reach the plan funding objectives. Since January 1, 2022, the Company did not contribute to the plan; and
The actuarial valuation of the Logica U.K. Pension & Life Assurance Scheme reported a surplus of $91,000. It specified that no supplementary contributions were required in order to reach the plan funding objectives. During fiscal 2024, the Company contributed an amount of $447,000 to cover service costs; and
The actuarial valuation of the Logica Defined Benefit Pension Plan reported a surplus of $18,901,000. It specified that no supplementary contributions were required in order to reach the plan funding objectives. Since November 30, 2019, the Company did not contribute to the plan.
17.Employee benefits (continued)
DEFINED BENEFIT PLANS (CONTINUED)
France
In France, the retirement indemnities are provided in accordance with the Labour Code. Upon retirement, employees receive an indemnity, depending on the salary and seniority in the Company, in the form of a lump-sum payment.
Germany
In Germany, the Company has numerous defined benefit pension plans which are all closed to new employees. In the majority of the plans, upon retirement of employees, the benefits are in the form of a monthly pension and in a few plans, the employees receive an indemnity in the form of a lump-sum payment. There are no mandatory funding requirements. The plans are funded by the contributions made by the Company. In some plans, insurance policies are taken out to fund retirement benefit plans. These do not qualify as plan assets and are presented as reimbursement rights, unless they are part of a reinsured support fund or are pledged to the employees.
The following tables present amounts for post-employment benefits plans included in the consolidated balance sheets:
As at September 30, 2024 U.K. France Germany Other Total
$ $ $ $ $
 Defined benefit obligations (620,308) (95,366) (74,715) (107,559) (897,948)
 Fair value of plan assets 642,538    12,599  74,891  730,028 
22,230  (95,366) (62,116) (32,668) (167,920)
 Fair value of reimbursement rights     19,300  375  19,675 
 Net asset (liability) recognized in the balance sheet
22,230  (95,366) (42,816) (32,293) (148,245)
 
 Presented as:
 Other long-term assets (Note 10)
Insurance contracts held to fund defined
  benefit pension and life assurance
  arrangements - reimbursement rights
    19,300  375  19,675 
Retirement benefits assets 22,230      216  22,446 
 Retirement benefits obligations   (95,366) (62,116) (32,884) (190,366)
22,230  (95,366) (42,816) (32,293) (148,245)

As at September 30, 2023 U.K. France Germany Other Total
$ $ $ $ $
 Defined benefit obligations (535,633) (78,612) (67,706) (92,703) (774,654)
 Fair value of plan assets 536,226  —  11,747  64,138  612,111 
593  (78,612) (55,959) (28,565) (162,543)
 Fair value of reimbursement rights —  —  19,082  376  19,458 
 Net asset (liability) recognized in the balance sheet
593  (78,612) (36,877) (28,189) (143,085)
 
 Presented as:
 Other long-term assets (Note 10)
Insurance contracts held to fund defined
  benefit pension and life assurance
  arrangements - reimbursement rights
—  —  19,082  376  19,458 
Retirement benefits assets 593  —  —  243  836 
 Retirement benefits obligations —  (78,612) (55,959) (28,808) (163,379)
593  (78,612) (36,877) (28,189) (143,085)
17.Employee benefits (continued)
DEFINED BENEFIT PLANS (CONTINUED)
Defined benefit obligations U.K. France Germany Other Total
$ $ $ $ $
As at September 30, 2023 535,633  78,612  67,706  92,703  774,654 
 Current service cost
946  6,114  373  6,732  14,165 
 Interest cost
30,561  3,378  2,738  5,009  41,686 
 Actuarial losses due to change in financial assumptions1
29,444  10,088  4,948  3,405  47,885 
 Actuarial losses due to change in demographic assumptions1
—  111  —  338  449 
 Actuarial (gains) losses due to experience1
(1,222) (5,100) (787) 794  (6,315)
 Plan participant contributions
86  —  —  162  248 
 Benefits paid from the plan
(27,712) —  (503) (3,536) (31,751)
 Benefits paid directly by employer
—  (2,033) (3,192) (496) (5,721)
 Foreign currency translation adjustment1
52,572  4,196  3,432  2,448  62,648 
As at September 30, 2024 620,308  95,366  74,715  107,559  897,948 
 Defined benefit obligations of unfunded plans
—  95,366  —  21,600  116,966 
 Defined benefit obligations of funded plans
620,308  —  74,715  85,959  780,982 
As at September 30, 2024 620,308  95,366  74,715  107,559  897,948 

Defined benefit obligations U.K. France Germany Other Total
$ $ $ $ $
As at September 30, 2022 525,262  77,477  61,420  85,784  749,943 
 Current service cost 997  6,106  379  6,251  13,733 
 Interest cost 27,445  3,093  2,600  4,414  37,552 
 Past service cost —  (288) —  —  (288)
 Actuarial (gains) losses due to change in financial assumptions1
(54,598) (4,575) 65  (1,581) (60,689)
 Actuarial (gains) losses due to change in demographic assumptions1
(12,077) 88  —  (11,987)
 Actuarial losses (gains) due to experience1
33,349  (6,035) 2,571  3,496  33,381 
 Plan participant contributions 76  —  —  170  246 
 Benefits paid from the plan (26,527) —  (229) (4,359) (31,115)
 Benefits paid directly by employer —  (2,565) (2,992) (747) (6,304)
 Foreign currency translation adjustment1
41,706  5,311  3,892  (727) 50,182 
As at September 30, 2023 535,633  78,612  67,706  92,703  774,654 
 Defined benefit obligations of unfunded
  plans
—  78,612  —  18,132  96,744 
 Defined benefit obligations of funded plans 535,633  —  67,706  74,571  677,910 
As at September 30, 2023 535,633  78,612  67,706  92,703  774,654 
1     Amounts recognized in other comprehensive income.
17.Employee benefits (continued)
DEFINED BENEFIT PLANS (CONTINUED)
Plan assets and reimbursement rights U.K. France Germany Other Total
$ $ $ $ $
As at September 30, 2023 536,226  —  30,829  64,514  631,569 
 Interest income on plan assets 30,573  —  1,300  3,712  35,585 
 Employer contributions 426  2,033  2,804  7,714  12,977 
 Return on assets excluding interest income1
50,973  —  (906) 1,579  51,646 
 Plan participant contributions 86  —  —  162  248 
 Benefits paid from the plan (27,712) —  (503) (3,536) (31,751)
 Benefits paid directly by employer —  (2,033) (3,192) (496) (5,721)
 Administration expenses paid from the plan (1,462) —  —  —  (1,462)
 Foreign currency translation adjustment1
53,428  —  1,567  1,617  56,612 
As at September 30, 2024 642,538    31,899  75,266  749,703 
 Plan assets 642,538  —  12,599  74,891  730,028 
 Reimbursement rights —  —  19,300  375  19,675 
As at September 30, 2024 642,538    31,899  75,266  749,703 

Plan assets and reimbursement rights U.K. France Germany Other Total
$ $ $ $ $
As at September 30, 2022 571,909  —  29,523  59,414  660,846 
 Interest income on plan assets 29,902  —  1,283  3,370  34,555 
 Employer contributions 339  2,565  2,983  6,744  12,631 
 Return on assets excluding interest income1
(84,003) —  (1,668) (12) (85,683)
 Plan participant contributions 76  —  —  170  246 
 Benefits paid from the plan (26,527) —  (229) (4,359) (31,115)
 Benefits paid directly by employer —  (2,565) (2,992) (747) (6,304)
 Administration expenses paid from the plan (1,779) —  —  (5) (1,784)
 Foreign currency translation adjustment1
46,309  —  1,929  (61) 48,177 
As at September 30, 2023 536,226  —  30,829  64,514  631,569 
 Plan assets 536,226  —  11,747  64,138  612,111 
 Reimbursement rights —  —  19,082  376  19,458 
As at September 30, 2023 536,226  —  30,829  64,514  631,569 
1     Amounts recognized in other comprehensive income.
17.Employee benefits (continued)
DEFINED BENEFIT PLANS (CONTINUED)
The plan assets at the end of the years consist of:
As at September 30, 2024 U.K. Germany Other Total
$ $ $ $
 Quoted equities 260,103  —  —  260,103 
 Quoted bonds 158,739  —  —  158,739 
 Cash 3,123  —  68  3,191 
 Other1
220,573  12,599  74,823  307,995 
642,538  12,599  74,891  730,028 

As at September 30, 2023 U.K. Germany Other Total
$ $ $ $
 Quoted equities 205,130  —  —  205,130 
 Quoted bonds 139,584  —  —  139,584 
 Cash 5,566  —  76  5,642 
 Other1
185,946  11,747  64,062  261,755 
536,226  11,747  64,138  612,111 
1    Other is mainly composed of quoted investment funds and various insurance policies to cover some of the defined benefit obligations.

Plan assets do not include any shares of the Company, property occupied by the Company or any other assets used by the Company.
The following table summarizes the expense1 recognized in the consolidated statements of earnings:
Year ended September 30
2024 2023
$ $
 Current service cost 14,165  13,734 
 Past service cost   (288)
 Net interest on net defined benefit obligations or assets 6,101  2,998 
 Administration expenses
1,462  1,784 
21,728  18,228 
1    The expense was presented as costs of services, selling and administrative for an amount of $14,165,000 and as net finance costs for an amount of $7,563,000 (Note 26) ($13,446,000 and $4,782,000, respectively for the year ended September 30, 2023).
17.Employee benefits (continued)
DEFINED BENEFIT PLANS (CONTINUED)
Actuarial assumptions
The following are the principal actuarial assumptions calculated as weighted averages of the defined benefit obligations. The assumed discount rates, future salary and pension increases, inflation rates and mortality all have a significant effect on the accounting valuation.
As at September 30, 2024 U.K France Germany Other
% % % %
 Discount rate 5.00  3.33  3.33  5.06 
 Future salary increases 0.31  4.10  2.50  2.74 
 Future pension increases 3.01    2.10  0.31 
 Inflation rate 3.15  2.00  2.00  3.44 
As at September 30, 2023 U.K. France Germany Other
% % % %
 Discount rate 5.60  4.20  4.06  5.62 
 Future salary increases 0.33  4.15  2.50  2.76 
 Future pension increases 3.20  —  2.10  0.29 
 Inflation rate 3.39  2.10  2.00  3.46 
The average longevity over 65 of an employee presently at age 45 and 65 are as follows:
As at September 30, 2024 U.K. Germany
                                  (in years)
 Longevity at age 65 for current employees
Males 22.1 21.0
Females 23.9 24.0
 Longevity at age 45 for current employees
Males 23.5 24.0
Females 25.4 27.0
As at September 30, 2023 U.K. Germany
                                  (in years)
 Longevity at age 65 for current employees
Males 22.0 21.0
Females 23.8 24.0
 Longevity at age 45 for current employees
Males 23.4 24.0
Females 25.3 26.0
17.Employee benefits (continued)
DEFINED BENEFIT PLANS (CONTINUED)
Actuarial assumptions (continued)
Assumptions regarding future mortality are set based on actuarial advice in accordance with published statistics and experience in each country. Mortality assumptions for the most significant countries are based on the following post-retirement mortality tables for the year ended September 30, 2024: (1) U.K.: 100% of the mortality rates in 2019 Vita Curves plus CMI_2020 projections model with a smoothing parameter (Sk) of 7.5, an Initial Addition (A) parameter of 0, nil weighting on 2020 data (w2020=0) and a 1.25% p.a. minimum long term improvement rate for both males and females, (2) Germany: Heubeck RT2018G and (3) France: INSEE 2018-2020 (INSEE TVTD 2017-2019 for the year ended September 30, 2023).
The following tables show the sensitivity of the defined benefit obligations to changes in the principal actuarial assumptions:
As at September 30, 2024 U.K. France Germany
$ $ $
 Increase of 0.25% in the discount rate
(18,334) (2,927) (1,796)
 Decrease of 0.25% in the discount rate
19,263  3,056  1,874 
 Salary increase of 0.25%
181  3,151  23 
 Salary decrease of 0.25%
(179) (3,029) (21)
 Pension increase of 0.25%
10,675    948 
 Pension decrease of 0.25%
(9,287)   (913)
 Increase of 0.25% in inflation rate
12,047  3,151  948 
 Decrease of 0.25% in inflation rate
(11,798) (3,029) (913)
 Increase of one year in life expectancy
15,309  664  2,025 
 Decrease of one year in life expectancy
(15,478) (710) (1,809)
As at September 30, 2023 U.K. France Germany
$ $ $
 Increase of 0.25% in the discount rate
(15,631) (2,370) (1,596)
 Decrease of 0.25% in the discount rate
16,416  2,473  1,663 
 Salary increase of 0.25%
137  2,572  23 
 Salary decrease of 0.25%
(132) (2,474) (21)
 Pension increase of 0.25%
8,713  —  834 
 Pension decrease of 0.25%
(8,503) —  (805)
 Increase of 0.25% in inflation rate
12,348  5,660  834 
 Decrease of 0.25% in inflation rate
(11,948) (5,110) (805)
 Increase of one year in life expectancy
12,614  943  1,702 
 Decrease of one year in life expectancy
(12,801) (1,258) (1,530)
The sensitivity analysis above has been based on a method that extrapolates the impact on the defined benefit obligations as a result of reasonable changes in key assumptions occurring at the end of the year.
The remaining weighted average duration of the defined benefit obligations are as follows:
Year ended September 30
2024 2023
                      (in years)
 U.K. 13 13
 France 17 17
 Germany 10 10
 Other 9 9
17.Employee benefits (continued)
DEFINED BENEFIT PLANS (CONTINUED)
The Company expects to contribute $8,616,000 to defined benefit plans during the next year, of which $369,000 relates to the U.K. plans, and $8,246,000 relates to the other plans.
DEFINED CONTRIBUTION PLANS
The Company also operates defined contribution pension plans. In some countries, contributions are made into the state pension plans. The pension cost for defined contribution plans amounted to $296,470,000 in 2024 ($282,284,000 in 2023).
In addition, in Sweden, the Company contributes to a multi-employer plan, Alecta SE (Alecta) pension plan, which is a defined benefit pension plan. This pension plan is classified as a defined contribution plan as sufficient information is not available to use defined benefit accounting. Alecta lacks the possibility of establishing an exact distribution of assets and provisions to the respective employers. The Company’s proportion of the total contributions to the plan is 0.72% and the Company’s proportion of the total number of active employees in the plan is 0.48%.
Alecta uses a collective funding ratio to determine the surplus or deficit in the pension plan. Any surplus or deficit in the plan will affect the amount of future contributions payable. The collective funding is the difference between Alecta’s assets and the commitments to the policy holders and insured individuals. The collective funding ratio is normally allowed to vary between 125% and 175%. As at September 30, 2024, Alecta collective funding ratio was 163% (178% in 2023). The plan expense was $23,422,000 in 2024 ($25,311,000 in 2023). The Company expects to contribute $18,043,000 to the plan during the next year.
OTHER BENEFIT PLANS
As at September 30, 2024, the deferred compensation liability totaled $124,447,000 ($97,745,000 as at September 30, 2023) (Note 15) and the deferred compensation assets totaled $112,270,000 ($88,076,000 as at September 30, 2023) (Note 11). The deferred compensation liability is mainly related to plans covering some of its U.S. management. Some of the plans include assets that will be used to fund the liabilities.
For the deferred compensation plan in the U.S., a trust was established so that the plan assets could be segregated; however, the assets are subject to the Company’s general creditors in the case of bankruptcy. The assets composed of investments vary with employees’ contributions and changes in the value of the investments. The change in liabilities associated with the plan is equal to the change of the assets. The assets in the trust and the associated liabilities totaled $112,270,000 as at September 30, 2024 ($88,076,000 as at September 30, 2023).