. there were no borrowings under our credit facility as of december 31 , 2016 or 2015 . the credit facility supports our $ 2.0 billion u.s . commercial paper program and $ 2.0 billion european commercial paper program . we increased the european commercial paper program from $ 200 million during the third quarter of 2016 . combined borrowing under these two commercial paper programs may not exceed $ 2.0 billion . as of december 31 , 2016 , we had no amount outstanding under either our u.s