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Recently Issued and Adopted Accounting Pronouncements and Regulatory Items
 6 Months Ended
Jun. 30, 2021
Accounting Policies [Abstract]  
Recently Issued and Adopted Accounting Pronouncements and Regulatory Items Recently Issued and Adopted Accounting Pronouncements and Regulatory Items
New accounting guidance and regulatory items
In March 2020, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This ASU provides optional guidance for a limited period of time to ease the potential burden in accounting for contracts and hedging relationships affected by reference rate reform. This applies to contracts that reference LIBOR or another rate that is expected to be discontinued as a result of rate reform and have modified terms that affect or have the potential to affect the amount and timing of contractual cash flows resulting from the discontinuance of the reference rate. The new standard is currently effective and upon adoption may be applied prospectively through December 31, 2022. We are evaluating the impacts this standard will have on accounting for contracts and hedging relationships, but do not believe it will have a material impact on our consolidated financial statements.

Recently adopted accounting guidance
In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The amendments in this ASU simplify the accounting for income taxes by removing certain exceptions and simplification in several other areas. The new standard became effective for fiscal years beginning after December 15, 2020 (i.e., a January 1, 2021 effective date). There was no material impact to our consolidated financial statements upon adoption.