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Accumulated Other Comprehensive Loss | 12 Months Ended
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Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss). |
Accumulated Other Comprehensive Income (Loss) | 15. Accumulated Other Comprehensive Income (Loss) Components of comprehensive income (loss) are net income (loss) and all changes in equity during a period except those resulting from transactions with owners. Our accumulated other comprehensive income (loss) consists of changes in the fair value of our interest rate swap derivative instruments, net of tax, which are designated as cash flow hedges, amortization of terminated interest rate swaps and adjustments related to changes in our ownership of the Partnership as the result of the Merger. The following table presents the changes in accumulated other comprehensive income (loss) of our derivative cash flow hedges, net of tax and excluding noncontrolling interest (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ | ​ | 2020 |  | 2019 |  | 2018
Beginning accumulated other comprehensive income (loss) | ​ | $ | (1,387) | ​ | $ | 5,773 | ​ | $ | 1,197
Loss recognized in other comprehensive income (loss), net of tax provision (benefit) of $(1,776), $(1,425) and $169, respectively | ​ |  | (6,683) | ​ |  | (5,360) | ​ |  | (659)
(Gain) loss reclassified from accumulated other comprehensive income (loss) to interest expense, net of tax provision (benefit) of $(814), $478 and $185, respectively (1) | ​ |  | 3,064 | ​ |  | (1,800) | ​ |  | (435)
Merger-related adjustments (2) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 5,670
Other comprehensive income (loss) attributable to Archrock stockholders | ​ |  | (3,619) | ​ |  | (7,160) | ​ |  | 4,576
Ending accumulated other comprehensive income (loss) | ​ | $ | (5,006) | ​ | $ | (1,387) | ​ | $ | 5,773
(1) | Included stranded tax effects resulting from the Tax Cuts and Jobs Act of $0.3 million reclassified to accumulated deficit during the year ended December 31, 2018.
(2) | Pursuant to the Merger, we reclassified a gain of $5.7 million from noncontrolling interest to accumulated other comprehensive income (loss) related to the fair value of our derivative instruments that was previously attributed to public ownership of the Partnership.
See Note 22 (“Derivatives”) for further details on our interest rate swap derivative instruments.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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