Debt to Equity ratio of banks

I was trying to do fundamental analysis on ICICI Bank and I couldn’t find the debt to equity ratio of the same as none of the websites was showing this. After checking for several other banks, I couldn’t find D/E ratio for them also. Why is this the case? Do we don’t consider debt to Equity ratio of the banks? And if this is the case what are the other things we must look for while doing the fundamental analysis of banks?