It often looks for situations that enable it to get good assets at low prices. For example, in 2016, it bought a natural gas pipeline system in Brazil from Petrobras (NYSE: PBR), which needed to sell assets to pay off debt due to lower oil prices. Meanwhile, in the last year, it purchased data centers from AT&T (NYSE: T) and Enbridge 's (NYSE: ENB) Western Canadian midstream business in deals that helped those companies bolster their balance sheets.