Not for consultancy they haven't. That figure is for global turnover and it's in $$$ which makes it look more impressive. That figure includes mainframe sales and all the low profit margin scrote jobs such as changing tapes and carrying printout to someone else that IBM does within financial industries. You're also overlooking the fact that IBM still makes a great deal of its money in mainframes with System Z and in software sales.
IBM GBS turns over about $20bn but that doesn't exclusively represent "consultancy" either and what growth IBM has shown has been by acquisition, not by business development.