rent expense and certain office equipment expense under agreements amounted to $ 132 million , $ 137 million and $ 133 million in 2014 , 2013 and 2012 , respectively . investment commitments . at december 31 , 2014 , the company had $ 161 million of various capital commitments to fund sponsored investment funds , including funds of private equity funds , real estate funds , infrastructure funds , opportunistic funds and distressed credit funds