2019
2018
2017
Currency translation losses, net of reclassification adjustments
$(90.9)
$(94.7)
$(98.6)
Derivative adjustments, net of reclassification adjustments
34.0
1.0
(1.1)
Unrealized gains (losses) on available-for-sale securities
—
0.6
(0.3)
Pension and post-employment benefit obligations, net of reclassification adjustments
(53.4)
(17.4)
(112.9)
Accumulated other comprehensive loss 1
$(110.3)
$(110.5)
$(212.9)

text: Comprehensive Income — Comprehensive income includes net income, currency translation adjustments, certain derivative-related activity, changes in the value of available-for-sale investments (prior to the adoption of Accounting Standards Update ("ASU") 2016-01), and changes in prior service cost and net actuarial gains (losses) from pension (for amounts not in excess of the 10% "corridor") and postretirement health care plans. On foreign investments we deem to be essentially permanent in nature, we do not provide for taxes on currency translation adjustments arising from converting an investment denominated in a foreign currency to U.S. dollars. When we determine that a foreign investment, as well as undistributed earnings, are no longer permanent in nature, estimated taxes will be provided for the related deferred tax liability (asset), if any, resulting from currency translation adjustments.
text: The following table details the accumulated balances for each component of other comprehensive income, net of tax:
text: 1 Net of unrealized gains on available-for-sale securities reclassified to retained earnings as a result of the adoption of ASU 2016-01 in fiscal 2019 and net of stranded tax effects from change in tax rate as a result of the early adoption of ASU 2018-02 in fiscal 2018 in the amount of $0.6 million and $17.4 million, respectively.
text: Notes to Consolidated Financial Statements - (Continued) Fiscal Years Ended May 26, 2019, May 27, 2018, and May 28, 2017 (columnar dollars in millions except per share amounts)

Questions:
question: What does comprehensive income comprise of?
answer: net income, currency translation adjustments, certain derivative-related activity, changes in the value of available-for-sale investments (prior to the adoption of Accounting Standards Update ("ASU") 2016-01), and changes in prior service cost and net actuarial gains (losses) from pension (for amounts not in excess of the 10% "corridor") and postretirement health care plans
question: What does the table show us?
answer: the accumulated balances for each component of other comprehensive income, net of tax
question: What are the balances for derivative adjustments (net of reclassification adjustments, in millions) for 2017, 2018 and 2019, respectively?
answer: (1.1)
1.0
34.0
question: What is the percentage change of accumulated other comprehensive loss in 2018 compared to 2017?
answer: -48.1
derivation: (-110.5-(-212.9))/(-212.9) 
scale: percent
question: What are the proportion of currency translation losses and derivative adjustments over accumulated other comprehensive loss in 2017?
answer: 0.47
derivation: (-98.6+(-1.1))/(-212.9) 
question: What is the total balance of pension and post-employment benefit obligations from 2017 to 2019?
answer: -183.7
derivation: -112.9+(-17.4)+(-53.4) 
scale: million