The following is an excerpt from Walmart's 2015 Form 10-K :
A summary of the provision for income taxes is as follows ($ millions):
Current:
U.S. federal $6,165
U.S. state and local 810
International 1,529
Total current tax provision 8,504
Deferred:
U.S. federal (387)
U.S. state and local (55)
International (77)
Total deferred tax expense (benefit) $(519)
What amount of income tax expense does Walmart report in its income statement for 2015?
How much of Walmart's income tax expense was determined from the company's tax returns?