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Government Assistance
3 Months Ended
Sep. 30, 2022
Government Assistance [Abstract]  
Government Assistance Government assistance
By analogy to the grant model of accounting within International Accounting Standards ("IAS") 20, Accounting for Government Grants and Disclosure of Government Assistance, CP records government assistance from various levels of Canadian and U.S. governments and government agencies when the conditions of their receipt are complied with and there is reasonable assurance that the assistance will be received.

Government assistance related to properties has as a primary condition that CP should purchase, construct, or otherwise acquire property, plant and equipment. Under certain government assistance arrangements, there is a secondary condition that requires CP to repay a portion of the assistance if certain conditions related to the assets are not adhered to during a specified period. In these cases, it is CP's intention to comply with all conditions imposed by the terms of the government assistance. Government assistance received or receivable related to CP's property assets is deducted from the cost of the assets in the Interim Consolidated Balance Sheets within "Properties" and amortized over the same period as the related assets in "Depreciation and amortization" in the Interim Consolidated Statements of Income.

During the three and nine months ended September 30, 2022, the Company received $6 million and $25 million, respectively, of government assistance towards the purchase and construction of properties.
As of September 30, 2022, the total Properties balance of $22,150 million is net of $279 million of unamortized government assistance (December 31, 2021 - $259 million), primarily related to the enhancement of CP's track and roadway infrastructure. Amortization expense related to government assistance for the three and nine months ended September 30, 2022 was $3 million and $8 million, respectively.