( a ) excludes discontinued operations . ( b ) earnings before interest expense and taxes as a percent of average total assets . ( c ) total debt as a percent of the sum of total debt , shareholders 2019 equity and non-current deferred income tax liabilities . the results above include the impact of the specified items detailed below . additional discussion regarding the specified items in fiscal years 2017 , 2016 and 2015 are provided in item 7 . management 2019s discussion and analysis of financial condition and results of operations. .

========================================
millions of dollars except per share amounts | years ended september 30 2017 | years ended september 30 2016 | years ended september 30 2015 | years ended september 30 2014 | years ended september 30 2013
----------|----------|----------|----------|----------|----------
total specified items | $ 1466 | $ 1261 | $ 1186 | $ 153 | $ 442
after-tax impact of specified items | $ 971 | $ 892 | $ 786 | $ 101 | $ 279
impact of specified items on diluted earnings per share | $ -4.34 ( 4.34 ) | $ -4.10 ( 4.10 ) | $ -3.79 ( 3.79 ) | $ -0.51 ( 0.51 ) | $ -1.40 ( 1.40 )
impact of dilution from share issuances | $ -0.54 ( 0.54 ) | $ 2014 | $ -0.02 ( 0.02 ) | $ 2014 | $ 2014
========================================

item 7 . management 2019s discussion and analysis of financial condition and results of operations the following commentary should be read in conjunction with the consolidated financial statements and accompanying notes . within the tables presented throughout this discussion , certain columns may not add due to the use of rounded numbers for disclosure purposes . percentages and earnings per share amounts presented are calculated from the underlying amounts . references to years throughout this discussion relate to our fiscal years , which end on september 30 . company overview description of the company and business segments becton , dickinson and company ( 201cbd 201d ) is a global medical technology company engaged in the development , manufacture and sale of a broad range of medical supplies , devices , laboratory equipment and diagnostic products used by healthcare institutions , life science researchers , clinical laboratories , the pharmaceutical industry and the general public . the company's organizational structure is based upon two principal business segments , bd medical ( 201cmedical 201d ) and bd life sciences ( 201clife sciences 201d ) . bd 2019s products are manufactured and sold worldwide . our products are marketed in the united states and internationally through independent distribution channels and directly to end-users by bd and independent sales representatives . we organize our operations outside the united states as follows : europe ; ema ( which includes the commonwealth of independent states , the middle east and africa ) ; greater asia ( which includes japan and asia pacific ) ; latin america ( which includes mexico , central america , the caribbean , and south america ) ; and canada . we continue to pursue growth opportunities in emerging markets , which include the following geographic regions : eastern europe , the middle east , africa , latin america and certain countries within asia pacific . we are primarily focused on certain countries whose healthcare systems are expanding , in particular , china and india . strategic objectives bd remains focused on delivering sustainable growth and shareholder value , while making appropriate investments for the future . bd management operates the business consistent with the following core strategies : 2022 to increase revenue growth by focusing on our core products , services and solutions that deliver greater benefits to patients , healthcare workers and researchers; .

Question: what is the range of after-tax impact of specified items from 2013-2017 , in millions?
Program: subtract(971, 101)
Answer: 870.0