what was the net foreign exchange rate in 2015 in millions
Important information:
table_1: ( millions ) the foreign exchange rates of adverse impact on after-tax earnings 2015 is $ -254 ( 254 ) ; the foreign exchange rates of adverse impact on after-tax earnings 2014 is $ -164 ( 164 ) ; the foreign exchange rates of adverse impact on after-tax earnings 2015 is $ 273 ; the foreign exchange rates of 2014 is $ 173 ;
table_2: ( millions ) the interest rates of adverse impact on after-tax earnings 2015 is -13 ( 13 ) ; the interest rates of adverse impact on after-tax earnings 2014 is -4 ( 4 ) ; the interest rates of adverse impact on after-tax earnings 2015 is 9 ; the interest rates of 2014 is 3 ;
table_3: ( millions ) the commodity prices of adverse impact on after-tax earnings 2015 is -1 ( 1 ) ; the commodity prices of adverse impact on after-tax earnings 2014 is -1 ( 1 ) ; the commodity prices of adverse impact on after-tax earnings 2015 is 1 ; the commodity prices of 2014 is 1 ;
Reasoning Steps:
Step: add1-1(-254, 273) = 19
Program:
add(-254, 273)
Program (Nested):
add(-254, 273)

Please answer the following financial question based on the context provided. Make sure to give the answer in raw number, not in percentage and without any units. If the question asks for percentage the value should be less than 1
Context:
commodity prices risk : the company manages commodity price risks through negotiated supply contracts , price protection agreements and forward contracts . 3m used commodity price swaps as cash flow hedges of forecasted commodity transactions to manage price volatility , but discontinued this practice in the first quarter of 2015 . the related mark-to-market gain or loss on qualifying hedges was included in other comprehensive income to the extent effective , and reclassified into cost of sales in the period during which the hedged transaction affected earnings . value at risk : the value at risk analysis is performed annually to assess the company 2019s sensitivity to changes in currency rates , interest rates , and commodity prices . a monte carlo simulation technique was used to test the impact on after-tax earnings related to financial instruments ( primarily debt ) , derivatives and underlying exposures outstanding at december 31 , 2015 . the model ( third-party bank dataset ) used a 95 percent confidence level over a 12-month time horizon . the exposure to changes in currency rates model used 18 currencies , interest rates related to three currencies , and commodity prices related to five commodities . this model does not purport to represent what actually will be experienced by the company . this model does not include certain hedge transactions , because the company believes their inclusion would not materially impact the results . the risk of loss or benefit associated with exchange rates was higher in 2015 due to a greater mix of floating rate debt and a rising interest rate environment in the u.s . interest rate volatility increased in 2015 , based on a higher mix of floating rate debt and the use of forward rates . the following table summarizes the possible adverse and positive impacts to after-tax earnings related to these exposures . adverse impact on after-tax positive impact on after-tax earnings earnings .
Table
( millions )           | adverse impact on after-tax earnings 2015 | adverse impact on after-tax earnings 2014 | adverse impact on after-tax earnings 2015 | 2014 
foreign exchange rates | $ -254 ( 254 )                            | $ -164 ( 164 )                            | $ 273                                     | $ 173
interest rates         | -13 ( 13 )                                | -4 ( 4 )                                  | 9                                         | 3    
commodity prices       | -1 ( 1 )                                  | -1 ( 1 )                                  | 1                                         | 1    
in addition to the possible adverse and positive impacts discussed in the preceding table related to foreign exchange rates , recent historical information is as follows . 3m estimates that year-on-year currency effects , including hedging impacts , had the following effects on pre-tax income : 2015 ( $ 390 million decrease ) and 2014 ( $ 100 million decrease ) . this estimate includes the effect of translating profits from local currencies into u.s . dollars ; the impact of currency fluctuations on the transfer of goods between 3m operations in the united states and abroad ; and transaction gains and losses , including derivative instruments designed to reduce foreign currency exchange rate risks and the negative impact of swapping venezuelan bolivars into u.s . dollars . 3m estimates that year-on-year derivative and other transaction gains and losses had the following effects on pre-tax income : 2015 ( $ 180 million increase ) and 2014 ( $ 10 million increase ) . an analysis of the global exposures related to purchased components and materials is performed at each year-end . a one percent price change would result in a pre-tax cost or savings of approximately $ 70 million per year . the global energy exposure is such that a ten percent price change would result in a pre-tax cost or savings of approximately $ 40 million per year . global energy exposure includes energy costs used in 3m production and other facilities , primarily electricity and natural gas. .
Question: 
what was the net foreign exchange rate in 2015 in millions
Important information:
table_1: ( millions ) the foreign exchange rates of adverse impact on after-tax earnings 2015 is $ -254 ( 254 ) ; the foreign exchange rates of adverse impact on after-tax earnings 2014 is $ -164 ( 164 ) ; the foreign exchange rates of adverse impact on after-tax earnings 2015 is $ 273 ; the foreign exchange rates of 2014 is $ 173 ;
table_2: ( millions ) the interest rates of adverse impact on after-tax earnings 2015 is -13 ( 13 ) ; the interest rates of adverse impact on after-tax earnings 2014 is -4 ( 4 ) ; the interest rates of adverse impact on after-tax earnings 2015 is 9 ; the interest rates of 2014 is 3 ;
table_3: ( millions ) the commodity prices of adverse impact on after-tax earnings 2015 is -1 ( 1 ) ; the commodity prices of adverse impact on after-tax earnings 2014 is -1 ( 1 ) ; the commodity prices of adverse impact on after-tax earnings 2015 is 1 ; the commodity prices of 2014 is 1 ;
Reasoning Steps:
Step: add1-1(-254, 273) = 19
Program:
add(-254, 273)
Program (Nested):
add(-254, 273)
