KKR later withdraw their offer .
18 August -- US private equity firm Kohlberg Kravis Roberts & Co. launches a $ 16 billion takeover bid for Coles Group .
Kohlberg Kravis Roberts & Co. later withdraw private equity firm 's offer .
18 August -- US private equity firm Kohlberg Kravis Roberts & Co. launches a $ 16 billion takeover bid for Coles Group .