Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Disclosure of significant accounting policies [Abstract]

These consolidated financial statements include the accounts of the Company and its subsidiaries. Subsidiaries are entities controlled by the Company, and are wholly-owned. Control exists when the Company is exposed, or has rights, to variable returns from its involvement with the investee and has the ability to affect those returns through its power over the investee. Subsidiaries are included in the consolidated financial results of the Company from the effective date of acquisition up to the effective date of disposition or loss of control. The Company's principal properties and material subsidiaries of the Company and their geographic locations at December 31, 2023 were as follows:


Direct parent company	Country of incorporation	Mining properties and projects owned










Alamos Gold Inc	Canada	Island Gold Mine Young-Davidson Mine Lynn Lake project
Minas de Oro Nacional, S.A. de C.V.	Mexico	The Mulatos District





Dogu Biga Madencilik Sanayi Ticaret AS	Türkiye	Turkish properties

Disclosure of detailed information about property, plant and equipment

Amortization rates applicable to each category of property, plant and equipment, with the exception of land, are as follows:


Asset			Useful life
Leasehold improvements			Lease term
Mobile equipment			2-10 years
Other equipment			2-20 years
Processing plant			Unit-of-production
Shaft, underground infrastructure and mineral properties			Unit-of-production
Vehicles			3-7 years
Buildings			7-20 years
Office equipment			2-8 years


		Mineral property
	Plant and equipment	Depletable	Non-depletable	Exploration and evaluation	Total
Cost
At December 31, 2021	$1,629.3	$2,631.2	$285.6	$319.3	$4,865.4
Additions	40.2	143.8	123.7	22.1	329.8
Transfer of La Yaqui Grande assets1	121.0	19.0	(140.0)	—	—
Revisions to decommissioning liabilities	—	6.7	—	—	6.7

Disposals	(1.7)	—	—	—	(1.7)
Sale of Esperanza Project	(0.4)	—	—	(89.6)	(90.0)
At December 31, 2022	$1,788.4	$2,800.7	$269.3	$251.8	$5,110.2
Additions	51.5	109.5	174.7	32.2	367.9
Acquisition of Manitou Gold Inc. (i)	—	—	—	20.0	20.0
Transfers	4.0	—	(4.0)	—	—
Revisions to decommissioning liabilities (note 11)	—	8.6	—	—	8.6
Disposals	(35.5)	(1.3)	—	(1.4)	(38.2)

At December 31, 2023	$1,808.4	$2,917.5	$440.0	$302.6	$5,468.5

Accumulated amortization and impairment charges
At December 31, 2021	$717.8	$811.8	142.4	$84.9	$1,756.9
Amortization	91.7	89.4	—	—	181.1

Disposals	(1.2)	—	—	—	(1.2)
Impairment expense on Esperanza Project (iv)	—	—	—	38.2	38.2
Sale of Esperanza Project (iv)	(0.4)	—	—	(38.2)	(38.6)
At December 31, 2022	$807.9	$901.2	$142.4	$84.9	$1,936.4
Amortization	106.6	101.0	—	—	207.6
Disposals	(34.3)	(1.3)	—	—	(35.6)



At December 31, 2023	$880.2	$1,000.9	$142.4	$84.9	$2,108.4

Net carrying value
At December 31, 2022	$980.5	$1,899.5	$126.9	$166.9	$3,173.8
At December 31, 2023	$928.2	$1,916.6	$297.6	$217.7	$3,360.1

1.La Yaqui Grande commenced commercial production on June 20, 2022.

The net carrying values and capital additions by segment (note 17) are as follows:


	December 31, 2023		December 31, 2022
	Mineral Property, Plant and Equipment	Capital additions for the year ended1	Mineral Property, Plant and Equipment	Capital additions for the year ended1
Young-Davidson	$1,500.3	$73.5	1,504.7	68.4
Island Gold	1,397.7	243.4	1,174.6	185.1
Mulatos	293.0	29.9	343.8	58.8


Corporate and other	169.1	21.1	150.7	17.5
	$3,360.1	$367.9	$3,173.8	$329.8

1.Segment capital additions are presented on an accrual basis. Mineral property, plant and equipment in the consolidated statements of cash flows are presented on a cash expenditure basis.

Schedule of Investments By Classification


Asset / Liability
Cash and cash equivalents						Amortized cost
Equity securities						Fair value through OCI
Amounts receivable						Amortized cost
Accounts payable and accrued liabilities						Amortized cost
Debt and financing obligations						Amortized cost
Non-hedged derivatives						Fair value through profit or loss
Cash flow hedging derivatives						Fair value through OCI
Esperanza Milestone Payments						Fair value through profit or loss