Derivative, Notional Amount Settled

No definition available.

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- Definition

Final repayment of principal amount.

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No definition available.

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- Definition

Long-term debt, loans, capital lease obligations, perpetual consolidated debenture stock, current and non-current.

+ References

No definition available.

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- Definition

Payments For Hedge, Operating Activities

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No definition available.

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- Definition

Amount of assets pledged to secure a debt instrument.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of right-of-use asset from finance lease.

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- Definition

Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Debt - Long-term Debt - Narrative (Details) $ in Millions						3 Months Ended			12 Months Ended
Debt - Long-term Debt - Narrative (Details) $ in Millions	Dec. 02, 2021 CAD ($)	Dec. 02, 2021 USD ($)	Dec. 02, 2021 CAD ($)	Dec. 02, 2021 USD ($)	Nov. 24, 2021 CAD ($)	Dec. 31, 2021 CAD ($)	Sep. 30, 2021 CAD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2021 CAD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CAD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Long-term debt and finance lease obligation, Current and non-current						$ 20,264			$ 20,264		$ 9,833
Annual maturities and principal repayments in 2022						1,446			1,446
Annual maturities and principal repayments in 2023						1,473			1,473
Annual maturities and principal repayments in 2024						1,984			1,984
Annual maturities and principal repayments in 2025						888			888
Annual maturities and principal repayments in 2026						1,585			1,585
Proceeds from issuance of long-term debt			$ 8,600	$ 6,700,000,000	$ 2,200	10,700
Payment for settlement of derivatives	$ 226
Net book value						166			$ 166		171
Bond locks
Debt Instrument [Line Items]
Derivative notional amount settled	$ 600
Forward starting swaps
Debt Instrument [Line Items]
Derivative notional amount settled		$ 2,400,000,000
2.450% 10-year Notes and 3.000% 20-year Notes
Debt Instrument [Line Items]
Redemption price percentage									101.00%	101.00%
2.450% 10-year Notes
Debt Instrument [Line Items]
Long-term debt and finance lease obligation, Current and non-current						$ 1,774			$ 1,774		0
Proceeds from issuance of long-term debt			1,780	1,390,000,000
Debt face amount		$ 1,400,000,000		$ 1,400,000,000
Interest rate		2.45%		2.45%		2.45%			2.45%				2.45%
Debt term									10 years	10 years
3.000% 20-year Notes
Debt Instrument [Line Items]
Long-term debt and finance lease obligation, Current and non-current						$ 1,261			$ 1,261		0
Proceeds from issuance of long-term debt			$ 1,260	$ 990,000,000
Debt face amount		$ 1,000,000,000.0		$ 1,000,000,000.0
Interest rate		3.00%		3.00%		3.00%			3.00%				3.00%
Debt term									20 years	20 years
9.450% 30-year Debentures
Debt Instrument [Line Items]
Long-term debt and finance lease obligation, Current and non-current						$ 0			$ 0		318
Interest rate						9.45%	9.45%	9.45%	9.45%				9.45%
Extinguishment of debt, amount								$ 250,000,000
Debt term							30 years	30 years	30 years	30 years
Repayments of debt							$ 312	$ 250,000,000
2.050% 10-year Notes
Debt Instrument [Line Items]
Long-term debt and finance lease obligation, Current and non-current						$ 633			$ 633		636
Proceeds from issuance of long-term debt											662	$ 495,000,000
Debt face amount											$ 500
Interest rate						2.05%			2.05%		2.05%		2.05%	2.05%
Debt term									10 years	10 years	10 years	10 years
3.050% 30-year Notes
Debt Instrument [Line Items]
Long-term debt and finance lease obligation, Current and non-current						$ 298			$ 298		$ 298
Proceeds from issuance of long-term debt											296
Debt face amount											$ 300
Interest rate						3.05%			3.05%		3.05%		3.05%	3.05%
Debt term									30 years	30 years	30 years	30 years
5.41% Senior Secured Notes
Debt Instrument [Line Items]
Long-term debt and finance lease obligation, Current and non-current						$ 80			$ 80		$ 89
Interest rate						5.41%			5.41%				5.41%
Value of locomotive units used as collateral						$ 92			$ 92
Final repayment of principal amount										$ 44,000,000
6.91% Secured Equipment Notes
Debt Instrument [Line Items]
Long-term debt and finance lease obligation, Current and non-current						$ 58			$ 58		$ 75
Interest rate						6.91%			6.91%				6.91%
Value of locomotive units used as collateral						$ 34			$ 34
Final repayment of principal amount									$ 11
U.S dollar-denominated
Debt Instrument [Line Items]
Long-term debt and finance lease obligation, Current and non-current													$ 13,265,000,000	$ 6,713,000,000