Cash balances in larger corporates have built up steadily since the financial crisis are folk husband their resources carefully.  I've often commented on how such large accumulated cash balances in have become a driver for M&A "post" financial crisis.  

They say a picture is worth a thousand words - well I've found a chart that illustrates the cash balances growth very clearly.  

The graphic which is from Capital IQ via Deloitte shows cash balances fairly static up to the autumn of 2008 since when they've grown strongly.