{"pre_text": ["additions to property , plant and equipment are our most significant use of cash and cash equivalents .", "the following table shows capital expenditures related to continuing operations by segment and reconciles to additions to property , plant and equipment as presented in the consolidated statements of cash flows for 2014 , 2013 and 2012: ."], "post_text": ["as of december 31 , 2014 , we had repurchased a total of 121 million common shares at a cost of $ 4.7 billion , including 29 million shares at a cost of $ 1 billion in the first six months of 2014 and 14 million shares at a cost of $ 500 million in the third quarter of 2013 .", "see item 8 .", "financial statements and supplementary data 2013 note 22 to the consolidated financial statements for discussion of purchases of common stock .", "liquidity and capital resources our main sources of liquidity are cash and cash equivalents , internally generated cash flow from operations , continued access to capital markets , our committed revolving credit facility and sales of non-strategic assets .", "our working capital requirements are supported by these sources and we may issue commercial paper backed by our $ 2.5 billion revolving credit facility to meet short-term cash requirements .", "because of the alternatives available to us as discussed above and access to capital markets through the shelf registration discussed below , we believe that our short-term and long-term liquidity is adequate to fund not only our current operations , but also our near-term and long-term funding requirements including our capital spending programs , dividend payments , defined benefit plan contributions , repayment of debt maturities and other amounts that may ultimately be paid in connection with contingencies .", "at december 31 , 2014 , we had approximately $ 4.9 billion of liquidity consisting of $ 2.4 billion in cash and cash equivalents and $ 2.5 billion availability under our revolving credit facility .", "as discussed in more detail below in 201coutlook 201d , we are targeting a $ 3.5 billion budget for 2015 .", "based on our projected 2015 cash outlays for our capital program and dividends , we expect to outspend our cash flows from operations for the year .", "we will be constantly monitoring our available liquidity during 2015 and we have the flexibility to adjust our budget throughout the year in response to the commodity price environment .", "we will also continue to drive the fundamentals of expense management , including organizational capacity and operational reliability .", "capital resources credit arrangements and borrowings in may 2014 , we amended our $ 2.5 billion unsecured revolving credit facility and extended the maturity to may 2019 .", "see note 16 to the consolidated financial statements for additional terms and rates .", "at december 31 , 2014 , we had no borrowings against our revolving credit facility and no amounts outstanding under our u.s .", "commercial paper program that is backed by the revolving credit facility .", "at december 31 , 2014 , we had $ 6391 million in long-term debt outstanding , and $ 1068 million is due within one year , of which the majority is due in the fourth quarter of 2015 .", "we do not have any triggers on any of our corporate debt that would cause an event of default in the case of a downgrade of our credit ratings .", "shelf registration we have a universal shelf registration statement filed with the sec , under which we , as \"well-known seasoned issuer\" for purposes of sec rules , have the ability to issue and sell an indeterminate amount of various types of debt and equity securities from time to time. ."], "table": [["( in millions )", "year ended december 31 , 2014", "year ended december 31 , 2013", "year ended december 31 , 2012"], ["north america e&p", "$ 4698", "$ 3649", "$ 3988"], ["international e&p", "534", "456", "235"], ["oil sands mining", "212", "286", "188"], ["corporate", "51", "58", "115"], ["total capital expenditures", "5495", "4449", "4526"], ["change in capital expenditure accrual", "-335 ( 335 )", "-6 ( 6 )", "-165 ( 165 )"], ["additions to property plant and equipment", "$ 5160", "$ 4443", "$ 4361"]], "table_ori": [["", "Year Ended December 31,"], ["(In millions)", "2014", "2013", "2012"], ["North America E&P", "$4,698", "$3,649", "$3,988"], ["International E&P", "534", "456", "235"], ["Oil Sands Mining", "212", "286", "188"], ["Corporate", "51", "58", "115"], ["Total capital expenditures", "5,495", "4,449", "4,526"], ["Change in capital expenditure accrual", "(335)", "(6)", "(165)"], ["Additions to property, plant and equipment", "$5,160", "$4,443", "$4,361"]]}

Question: what was the average three year cash flow , in millions , from oil sands mining?
Evidence:
table_3: ( in millions ) the oil sands mining of year ended december 31 , 2014 is 212 ; the oil sands mining of year ended december 31 , 2013 is 286 ; the oil sands mining of year ended december 31 , 2012 is 188 ;
Program: table_average(oil sands mining, none)
Answer:
str_answer: 228.7
exe_answer: 228.66667