ConocoPhillips' strategy is paying big dividends for investors.ConocoPhillips (COP -2.42%) spent several years repositioning its global oil and gas portfolio by jettisoning non-core assets and building around its lowest-cost and highest-return operations. That strategy has paid big dividends in recent years. Literally -- the oil giant has transformed into a cash-gushing machine, which is giving it lots of money to return to shareholders. The oil company's cash-generating capabilities were on full display in ...