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Financial instruments and related risk management (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure Of Financial Instruments [Abstract]

Pre-tax exposure to foreign currency exchange risk

			Carrying value
		Currency		(Cdn)		Gain (loss)
Cash and cash equivalents		USD	$	105,463	$	5,273
Accounts receivable		USD		358,904		17,945
Long-term receivables, investments and other		USD		124,533		6,227
Accounts payable and accrued liabilities		USD		(45,474)		(2,274)
Net foreign currency derivatives		USD		(52,665)		(48,923)

Interest rate risk on variable rate financial instruments

	Gain (loss)
Interest rate contracts	$	(4,173)
Advances receivable from JV Inkai		1,179

Counterparty credit risk, as represented by the carrying amount of the financial assets

		2018		2017
Cash and cash equivalents	$	711,528	$	591,620
Short-term investments		391,025		-
Accounts receivable [note 6]		398,639		393,213
Advances receivable from JV Inkai [note 31]		124,533		58,820
Derivative assets [note 10]		3,881		40,804

Exposure to credit risk for trade receivables

			Carrying
		value
Investment grade credit rating		$	327,682
Non-investment grade credit rating			65,183
Total gross carrying amount		$	392,865
Loss allowance			-
Net		$	392,865

Aged trade receivables

			Corporate		Other
			customers		customers		Total
Current (not past due)		$	389,012	$	1,269		390,281
1-30 days past due			273		1,833		2,106
More than 30 days past due			96		382		478
Total		$	389,381	$	3,484		392,865

Liquidity risk, company's available debt facilities

The table below outlines the Company’s available debt facilities at December 31, 2018:
			Outstanding and
	Total amount		committed		Amount available
Unsecured revolving credit facility	$	1,250,000	$	-	$	1,250,000
Letter of credit facilities		1,716,473		1,572,984		143,489

Maturity analysis of financial liabilities

The tables below present a maturity analysis of Cameco’s financial liabilities, including principal and interest, based on the
expected cash flows from the reporting date to the contractual maturity date:
					Due in
	Carrying		Contractual		less than		Due in 1-3		Due in 3-5		Due after 5
	amount		cash flows		1 year		years		years		years
Accounts payable and accrued liabilities	$	224,754	$	224,754	$	224,754	$	-	$	-	$	-
Long-term debt		1,495,671		1,500,000		500,000		-		400,000		600,000
Foreign currency contracts		54,866		54,866		29,013		25,853		-		-
Other derivative liabilities		6,521		6,521		6,521		-		-		-
Total contractual repayments	$	1,781,812	$	1,786,141	$	760,288	$	25,853	$	400,000	$	600,000
					Due in
					less than		Due in 1-3		Due in 3-5		Due after 5
			Total		1 year		years		years		years
Total interest payments on long-term debt			$	336,210	$	69,390	$	82,080	$	67,080	$	117,660

Carrying amounts and accounting classifications

At December 31, 2018
			FVTPL		Amortized cost		FVOCI - designated		Total
Financial assets
	Cash and cash equivalents		$	-	$	711,528	$	-	$	711,528
	Short-term investments			-		391,025		-		391,025
	Accounts receivable [note 6]			-		402,350		-		402,350
	Derivative assets [note 10]
		Foreign currency contracts		2,201		-		-		2,201
		Interest rate contracts		1,680		-		-		1,680
	Investments in equity securities [note 10]			-		-		28,916		28,916
	Advances receivable from Inkai [note 31]			-		124,533		-		124,533
			$	3,881	$	1,629,436	$	28,916	$	1,662,233
Financial liabilities
	Accounts payable and accrued liabilities [note 12]		$	-	$	224,754	$	-	$	224,754
	Current portion of long-term debt [note 13]			-		499,599		-		499,599
	Derivative liabilities [note 14]
		Foreign currency contracts		54,866		-		-		54,866
		Interest rate contracts		823		-		-		823
		Uranium contracts		5,698		-		-		5,698
	Long-term debt [note 13]			-		996,072		-		996,072
				61,387		1,720,425		-		1,781,812
Net			$	(57,506)	$	(90,989)	$	28,916	$	(119,579)

At December 31, 2017
			FVTPL		Loans and receivables		Available for sale		Other financial liabilities		Total
Financial assets
	Cash and cash equivalents		$	-	$	591,620	$	-	$	-	$	591,620
	Accounts receivable [note 6]			-		396,824		-		-		396,824
	Derivative assets [note 10]
		Foreign currency contracts		39,984		-		-		-		39,984
		Interest rate contracts		820		-		-		-		820
	Investments in equity securities [note 10]			-		-		21,417		-		21,417
	Advances receivable from Inkai [note 31]			-		58,820		-		-		58,820
			$	40,804	$	1,047,264	$	21,417	$	-	$	1,109,485
Financial liabilities
	Accounts payable and accrued liabilities [note 12]		$	-	$	-	$	-	$	258,405	$	258,405
	Dividends payable			-		-		-		39,579		39,579
	Derivative liabilities [note 14]
		Foreign currency contracts		5,624		-		-		-		5,624
		Interest rate contracts		970		-		-		-		970
		Uranium contracts		16,820		-		-		-		16,820
	Long-term debt [note 13]			-		-		-		1,494,471		1,494,471
				23,414		-		-		1,792,455		1,815,869
Net			$	17,390	$	1,047,264	$	21,417	$	(1,792,455)	$	(706,384)

Fair value measurement, carrying amounts

As at December 31, 2018
					Fair value
		Carrying value			Level 1		Level 2		Total
Derivative assets [note 10]
	Foreign currency contracts	$	2,201	$	-	$	2,201	$	2,201
	Interest rate contracts		1,680		-		1,680		1,680
Investments in equity securities [note 10]			28,916		28,916		-		28,916
Current portion of long-term debt [note 13]			(499,599)		-		(511,210)		(511,210)
Derivative liabilities [note 14]
	Foreign currency contracts		(54,866)		-		(54,866)		(54,866)
	Interest rate contracts		(823)		-		(823)		(823)
	Uranium contracts		(5,698)		-		(5,698)		(5,698)
Long-term debt [note 13]			(996,072)		-		(1,111,782)		(1,111,782)
Net		$	(1,524,261)	$	28,916	$	(1,680,498)	$	(1,651,582)

As at December 31, 2017
					Fair value
		Carrying value			Level 1		Level 2		Total
Derivative assets [note 10]
	Foreign currency contracts	$	39,984	$	-	$	39,984	$	39,984
	Interest rate contracts		820		-		820		820
Investments in equity securities [note 10]			21,417		21,417		-		21,417
Derivative liabilities [note 14]
	Foreign currency contracts		(5,624)		-		(5,624)		(5,624)
	Interest rate contracts		(970)		-		(970)		(970)
	Uranium contracts		(16,820)		-		(16,820)		(16,820)
Long-term debt [note 13]			(1,494,471)		-		(1,652,230)		(1,652,230)
Net		$	(1,455,664)	$	21,417	$	(1,634,840)	$	(1,613,423)

Fair value of derivative instruments and classification

					2018		2017
Non-hedge derivatives:
	Foreign currency contracts			$	(52,665)	$	34,360
	Interest rate contracts				857		(150)
	Uranium contracts				(5,698)		(16,820)
Net				$	(57,506)	$	17,390
Classification:
	Current portion of long-term receivables, investments and other [note 10]			$	1,028	$	25,948
	Long-term receivables, investments and other [note 10]				2,853		14,856
	Current portion of other liabilities [note 14]				(35,534)		(11,249)
	Other liabilities [note 14]				(25,853)		(12,165)
Net				$	(57,506)	$	17,390

Summary of components of non-hedge derivative gains losses

The following table summarizes the different components of the gains (losses) on derivatives included in net earnings:
			2018		2017
Non-hedge derivatives:
	Foreign currency contracts	$	(85,967)	$	58,983
	Interest rate contracts		2,032		(4,014)
	Uranium contracts		2,854		1,281
Net		$	(81,081)	$	56,250

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