The following table presents revenues, net income, other comprehensive income (“OCI”) and dividends received of the  company’s investments in associates and joint ventures: 2.  Other infrastructure investments include a European port operation, a Texas electricity transmission project and other social infrastructure assets 1.  Other property investments include Darling Park Trust, E&Y Centre Sydney and 450 West 33 rd  Street Certain of the company’s investments are publicly listed entities with active pricing in a liquid market. The fair value based on  the publicly listed price of these investments in comparison to the company’s carrying value is as follows: During 2013, the company’s infrastructure operations recorded an impairment charge through equity accounted income of  $275 million relating to its investment in a North American natural gas transmission operation based on weak market fundamentals  in the U.S. natural gas market. Throughout 2013, the U.S. natural gas market experienced compressed basis spreads (a primary  driver of revenue) due to the build out of pipeline infrastructure as well as a decrease in gas prices driven by a fundamental shift  in supply dynamics in the U.S. These factors, in conjunction with regulatory approvals occurring in the later part of the year  which approved the further build out or reversal of certain pipelines, triggered an impairment of the operations’ property, plant  and equipment. 2013 ANNUAL REPORT 115 Dec. 31, 2013 Dec. 31, 2012 (MILLIONS) Public Price Carrying  Value Public Price Carrying  Value General Growth Properties  $ 5,125 $ 6,044 $ 4,207 $ 4,831 Rouse Properties  430 399 304 381 Other  31 23 38 24 $ 5,586 $ 6,466 $ 4,549 $ 5,236 The fair value gains at General Growth Properties, Inc. (“GGP”) during 2013 were based on the redevelopment of certain of  GGP’s investment properties progressing ahead of projections and increased operating budgets. Management reviewed the  carrying value of the embedded goodwill associated with its investment for impairment, which considered the variance between  the value of the investment as determined using the publicly-traded share price and the carrying value of the investment and  the estimated the recoverable amount of the value in use of the investment in GGP discounting the expected cash flows to be  received in the form of dividends plus the disposition value. As a result, the company recorded a $249 million impairment of  the goodwill associated with redevelopment options at GGP. This impairment loss is included within equity accounted income  within our property segment. 2013 2012 YEARS ENDED DECEMBER 31  (MILLIONS) Revenue Net  Income OCI Dividends  Received Revenue Net  Income  OCI Dividends  Received Property General Growth Properties  $  3,079 $  2,835 $  64 $  107 $ 3,102 $ 4,330 $ (74) $ 110 245 Park Avenue  145 55 — 29 144 130 — 30 Grace Building  100 154 — — 100 27 — — Rouse Properties  263 146 — 11 258 75 — 10 Other property investments 1 921 448 — 128 1,182 390 — 118 Renewable energy Other renewable energy investments  110 20 — 18 106 (12) — 12 Infrastructure South American transmission operation  446 113 264 68 440 55 321 45 Brazilian toll road  1,125 (15) (193) — 65 11 35 — Australian energy distribution  308 206 (45) 19 322 45 206 17 Other infrastructure investments 2 1,459 (1,032) 204 34 1,472 (95) (39) 7 Other  488 178 (18) 38 546 75 (2) 20 Total  $ 8,444 $ 3,108 $ 276 $ 452 $ 7,737 $ 5,031 $ 447 $ 369