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ASSET RETIREMENT OBLIGATIONS | 12 Months Ended
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Dec. 31, 2019
Asset Retirement Obligation Disclosure [Abstract] |
ASSET RETIREMENT OBLIGATIONS | ASSET RETIREMENT OBLIGATIONS Our ARO relate mostly to the retirement of pipelines, renewable power generation assets, obligations related to right-of way agreements and contractual leases for land use. The liability for the expected cash flows as recognized in the financial statements reflected discount rates ranging from 1.8% to 9.0%. A reconciliation of movements in our ARO liabilities is as follows:
December 31, | 2019 |  | 2018 |
(millions of Canadian dollars) |  |
Obligations at beginning of year | 989 |  | 793 |
Liabilities acquired | — |  | — |
Liabilities disposed | (59 | ) | (13 | )
Liabilities incurred | 15 |  | 145 |
Liabilities settled | (12 | ) | (21 | )
Change in estimate and other | (417 | ) | 29 |
Foreign currency translation adjustment | (18 | ) | 22 |
Accretion expense | 22 |  | 34 |
Obligations at end of year | 520 |  | 989 |
Presented as follows: |  |
Accounts payable and other | 7 |  | 6 |
Other long-term liabilities | 513 |  | 983 |
| 520 |  | 989 |

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- Definition The entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2175671 + Details
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