assumed health care cost trend rates for the u.s .retiree health care benefit plan as of december 31 are as follows: .
[['', '2017', '2016'], ['assumed health care cost trend rate for next year', '7.50% ( 7.50 % )', '6.75% ( 6.75 % )'], ['ultimate trend rate', '5.00% ( 5.00 % )', '5.00% ( 5.00 % )'], ['year in which ultimate trend rate is reached', '2028', '2024']]
a one percentage point increase or decrease in health care cost trend rates over all future periods would have increased or decreased the accumulated postretirement benefit obligation for the u.s .retiree health care benefit plan as of december 31 , 2017 , by $ 1 million .the service cost and interest cost components of 2017 plan expense would have increased or decreased by less than $ 1 million .deferred compensation arrangements we have a deferred compensation plan that allows u.s .employees whose base salary and management responsibility exceed a certain level to defer receipt of a portion of their cash compensation .payments under this plan are made based on the participant 2019s distribution election and plan balance .participants can earn a return on their deferred compensation based on notional investments in the same investment funds that are offered in our defined contribution plans .as of december 31 , 2017 , our liability to participants of the deferred compensation plans was $ 255 million and is recorded in other long-term liabilities on our consolidated balance sheets .this amount reflects the accumulated participant deferrals and earnings thereon as of that date .as of december 31 , 2017 , we held $ 236 million in mutual funds related to these plans that are recorded in long-term investments on our consolidated balance sheets , and serve as an economic hedge against changes in fair values of our other deferred compensation liabilities .we record changes in the fair value of the liability and the related investment in sg&a as discussed in note 8 .11 .debt and lines of credit short-term borrowings we maintain a line of credit to support commercial paper borrowings , if any , and to provide additional liquidity through bank loans .as of december 31 , 2017 , we had a variable-rate revolving credit facility from a consortium of investment-grade banks that allows us to borrow up to $ 2 billion until march 2022 .the interest rate on borrowings under this credit facility , if drawn , is indexed to the applicable london interbank offered rate ( libor ) .as of december 31 , 2017 , our credit facility was undrawn and we had no commercial paper outstanding .long-term debt we retired $ 250 million of maturing debt in march 2017 and another $ 375 million in june 2017 .in may 2017 , we issued an aggregate principal amount of $ 600 million of fixed-rate , long-term debt .the offering consisted of the reissuance of $ 300 million of 2.75% ( 2.75 % ) notes due in 2021 at a premium and the issuance of $ 300 million of 2.625% ( 2.625 % ) notes due in 2024 at a discount .we incurred $ 3 million of issuance and other related costs .the proceeds of the offerings were $ 605 million , net of the original issuance discount and premium , and were used for the repayment of maturing debt and general corporate purposes .in november 2017 , we issued a principal amount of $ 500 million of fixed-rate , long-term debt due in 2027 .we incurred $ 3 million of issuance and other related costs .the proceeds of the offering were $ 494 million , net of the original issuance discount , and were used for general corporate purposes .in may 2016 , we issued a principal amount of $ 500 million of fixed-rate , long-term debt due in 2022 .we incurred $ 3 million of issuance and other related costs .the proceeds of the offering were $ 499 million , net of the original issuance discount , and were used toward the repayment of a portion of $ 1.0 billion of maturing debt retired in may 2016 .in may 2015 , we issued a principal amount of $ 500 million of fixed-rate , long-term debt due in 2020 .we incurred $ 3 million of issuance and other related costs .the proceeds of the offering were $ 498 million , net of the original issuance discount , and were used toward the repayment of a portion of the debt that matured in august 2015 .we retired $ 250 million of maturing debt in april 2015 and another $ 750 million in august 2015 .texas instruments 2022 2017 form 10-k 51 .

Question: what was the total long-term debt retired in 2017
Answer: 625