using the exchange rate as of the balance sheet date, with remeasurement and other transaction gains and losses recorded in net earnings. Within selling, general and administrative expenses, the company recorded remeasurement losses of $3 million in the three months and $8 million in the six months ended June 30, 2021 and $3 million in the three months and $5 million in the six months ended June 30, 2020 related to the revaluation of the Argentinean peso denominated net monetary position over these periods.
Impact from pension participation changes
The impact from pension participation changes represent the charges incurred when employee groups are withdrawn from multiemployer pension plans and other changes in employee group pension plan participation. The company excludes these charges from its non-GAAP results because those amounts do not reflect the company’s ongoing pension obligations.
During the second quarter of 2021, the company made a decision to freeze its Defined Benefit Pension Scheme in the United Kingdom. As a result, the company recognized a curtailment credit of $14 million for the three and six months ended June 30, 2021 recorded within benefit plan non-service income. In addition, the company incurred incentive payment charges and other expenses related to this decision of $44 million in the three months and $45 million in the six months ended June 30, 2021 included in operating income.
On July 11, 2019, the company received an undiscounted withdrawal liability assessment related to the company’s complete withdrawal from the Bakery and Confectionery Union and Industry International Pension Fund totaling $526 million and requiring pro-rata monthly payments over 20 years. The company began making monthly payments during the third quarter of 2019. The company recorded $3 million of accreted interest in the three months and $6 million in the six months ended June 30, 2021 and $3 million in the three months and $6 million in the six months ended June 30, 2020 on the long-term liability within interest and other expense, net. As of June 30, 2021, the remaining discounted withdrawal liability was $368 million, with $14 million recorded in other current liabilities and $354 million recorded in long-term other liabilities.
Loss on debt extinguishment and related expenses
On March 31, 2021, the company completed an early redemption of Euro (€1,200 million) and U.S. dollar ($992 million) denominated notes. The company recorded $137 million of extinguishment loss and debt-related expenses within interest and other expense, net related to $110 million paid in excess of carrying value of the debt and recognizing unamortized discounts and deferred financing in earnings and $27 million foreign currency derivative loss related to the redemption payment at the time of the debt extinguishment.
Loss related to interest rate swaps
Within interest and other expense, net, the company recognized a pre-tax loss related to forward-starting interest rate swaps of $103 million ($79 million after-tax) in the first quarter of 2020 due to the changes in related forecasted debt.
Initial impacts from enacted tax law changes
The company excludes initial impacts from enacted tax law changes from its non-GAAP financial measures as they do not reflect its ongoing tax obligations under the enacted tax law changes. Initial impacts include items such as the remeasurement of deferred tax balances and the transition tax from the 2017 U.S. tax reform. Previously, the company only excluded the initial impacts from more material tax reforms, specifically the impacts of the 2019 Swiss tax reform and 2017 U.S. tax reform. To facilitate comparisons of its underlying operating results, the company has recast all historical non-GAAP earnings measures to exclude the initial impacts from enacted tax law changes.
The company recorded net tax expense from the increase of its deferred tax liabilities resulting from enacted tax legislation (mainly in the United Kingdom) of $95 million in the three months and $99 million in the six months ended June 30, 2021.
Gains and losses on equity method investment transactions
Keurig Dr Pepper Transactions:
On March 4, 2020, the company participated in a secondary offering of KDP shares and sold approximately 6.8 million shares, which reduced its ownership interest by 0.5% of total outstanding shares. The company received $185 million of proceeds and recorded a pre-tax gain of $71 million (or $54 million after-tax) during the three months ended March 31, 2020. On August 3, 2020, the company sold approximately 14.1 million shares of KDP, which reduced its ownership interest by 1.0% of the total outstanding shares. The company received $414 million of proceeds and recorded a pre-tax gain of $181 million (or $139 million after-tax) during the third quarter of 2020. On September 9, 2020, the company sold approximately 12.5 million shares of KDP, which reduced its ownership interest by 0.9% of the total outstanding shares. The company received $363 million of proceeds and recorded a pre-tax gain of $154 million (or $119 million after-tax) during the third quarter of 2020. On November 17, 2020, the company participated in a secondary offering of KDP shares and sold approximately 40.0 million shares, which reduced the company’s ownership interest by 2.8% of the total outstanding shares. The company received $1,132 million of