Table of Contents basis points from the divestiture of the Canadian wine business, which had a higher rate of selling, general and administrative expenses as a percent of net sales as compared with the rest of the Wine and Spirits business. Operating income growth in our Beer segment was driven predominantly by the factors discussed above. Wine and Spirits remained relatively flat as the loss of operating income in connection with the divestiture of the Canadian wine business was offset by the growth factors discussed above. Income from unconsolidated investments increased to $487.2 million for Fiscal 2018 from $27.3 million for Fiscal 2017, an increase of $459.9 million. This increase is driven largely by an unrealized net gain from the changes in fair value of our securities measured at fair value of $464.3 million. Interest expense remained relatively flat for Fiscal 2018 as compared to Fiscal 2017 as a lower average interest rate of approximately 30 basis points was offset by higher average borrowings of approximately $645 million. The lower average interest rate is predominantly due to the issuance of the lower rate December 2016 Senior Notes, May 2017 Senior Notes and November 2017 Senior Notes and the repayment of the higher rate August 2006 senior notes and January 2008 senior notes. The higher average borrowings are primarily attributable to the purchases of businesses and treasury stock, net of proceeds from the Canadian Divestiture, during Fiscal 2017. Our effective tax rate for Fiscal 2018 was 1.0% as compared with 26.4% for Fiscal 2017 driven primarily by the recognition of a $351.2 million income tax benefit for Fiscal 2018 associated with the enactment of the TCJ Act, which was signed into law on December 22, 2017. For Fiscal 2018, we recognized a provisional net income tax benefit comprised primarily of benefits from (i) the remeasurement of our deferred tax assets and liabilities to the new, lower federal statutory rate and (ii) the reversal of deferred tax liabilities previously provided for unremitted earnings of foreign subsidiaries which were not considered to be indefinitely reinvested; partially offset by the recording of the mandatory one-time transition tax on unremitted earnings of our foreign subsidiaries. Our effective tax rate for Fiscal 2018 as compared with Fiscal 2017 was also favorably impacted by: 40 • the new, lower federal statutory rate of 32.7% associated with the TCJ Act, as compared to the federal statutory rate of 35% in effect for Fiscal 2017. • the recognition of the income tax effect of stock-based compensation awards in the income statement when the awards vest or are settled in connection with our March 1, 2017, adoption of FASB amended share-based compensation guidance; and • lower effective tax rates applicable to our foreign businesses; Operating Income Income from Unconsolidated Investments Interest Expense Provision for Income Taxes Fiscal 2018 Fiscal 2017 Dollar  Change Percent  Change (in millions) Beer $ 1,840.2 $ 1,532.4 $ 307.8 20 % Wine and Spirits 794.1 792.4 1.7 —% Corporate Operations and Other (165.8 ) (139.9 ) (25.9 ) (19 %) Comparable Adjustments (188.7) 204.1 (392.8) NM Consolidated operating income $ 2,279.8 $ 2,389.0 $ (109.2 ) (5 %)