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Consolidated Statements of Comprehensive Income - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Net income | $ 179 | $ 211 | $ 262
Other comprehensive (loss) income : |  |  |
Adjustment to pension liability | (7) | 1 | (7)
Income tax (benefit) expense | (2) | 0 | (3)
Adoption of ASU 2018-02 | 0 |  |
Other comprehensive (loss) income | (10) | 1 | (4)
Comprehensive income | 169 | 212 | 258
AOCI Attributable to Parent [Member] |  |  |
Net income | 0 | 0 | 0
Other comprehensive (loss) income : |  |  |
Adoption of ASU 2018-02 | $ (5) | $ 0 | $ 0

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