table of contents liquidity and capital resources the following table presents selected financial information and statistics as of and for the years ended september 27 , 2014 , september 28 , 2013 and september 29 , 2012 ( in millions ) : the company believes its existing balances of cash , cash equivalents and marketable securities will be sufficient to satisfy its working capital needs , capital asset purchases , outstanding commitments and other liquidity requirements associated with its existing operations over the next 12 months .
to provide additional flexibility in managing liquidity , the company began accessing the commercial paper markets in the third quarter of 2014 .
the company currently anticipates the cash used for future dividends and the share repurchase program will come from its current domestic cash , cash generated from on-going u.s .
operating activities and from borrowings .
as of september 27 , 2014 and september 28 , 2013 , $ 137.1 billion and $ 111.3 billion , respectively , of the company 2019s cash , cash equivalents and marketable securities were held by foreign subsidiaries and are generally based in u.s .
dollar-denominated holdings .
amounts held by foreign subsidiaries are generally subject to u.s .
income taxation on repatriation to the u.s .
the company 2019s marketable securities investment portfolio is invested primarily in highly-rated securities and its investment policy generally limits the amount of credit exposure to any one issuer .
the policy requires investments generally to be investment grade with the objective of minimizing the potential risk of principal loss .
during 2014 , cash generated from operating activities of $ 59.7 billion was a result of $ 39.5 billion of net income , non-cash adjustments to net income of $ 13.2 billion and an increase in net change in operating assets and liabilities of $ 7.0 billion .
cash used in investing activities of $ 22.6 billion during 2014 consisted primarily of cash used for purchases of marketable securities , net of sales and maturities , of $ 9.0 billion ; cash used to acquire property , plant and equipment of $ 9.6 billion ; and cash paid for business acquisitions , net of cash acquired , of $ 3.8 billion .
cash used in financing activities of $ 37.5 billion during 2014 consisted primarily of cash used to repurchase common stock of $ 45.0 billion and cash used to pay dividends and dividend equivalents of $ 11.1 billion , partially offset by net proceeds from the issuance of long-term debt and commercial paper of $ 12.0 billion and $ 6.3 billion , respectively .
during 2013 , cash generated from operating activities of $ 53.7 billion was a result of $ 37.0 billion of net income , non-cash adjustments to net income of $ 10.2 billion and an increase in net change in operating assets and liabilities of $ 6.5 billion .
cash used in investing activities of $ 33.8 billion during 2013 consisted primarily of cash used for purchases of marketable securities , net of sales and maturities , of $ 24.0 billion and cash used to acquire property , plant and equipment of $ 8.2 billion .
cash used in financing activities of $ 16.4 billion during 2013 consisted primarily of cash used to repurchase common stock of $ 22.9 billion and cash used to pay dividends and dividend equivalents of $ 10.6 billion , partially offset by net proceeds from the issuance of long-term debt of $ 16.9 billion .
apple inc .
| 2014 form 10-k | 35 .

2014
2013
2012
Cash, cash equivalents and marketable securities
$155,239
$146,761
$121,251
Property, plant and equipment, net
$20,624
$16,597
$15,452
Long-term debt
$28,987
$16,960
$0
Working capital
$5,083
$29,628
$19,111
Cash generated by operating activities
$59,713
$53,666
$50,856
Cash used in investing activities
$(22,579)
$(33,774)
$(48,227)
Cash used in financing activities
$(37,549)
$(16,379)
$(1,698)

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Question: Analyse this data from a financial earnings document. what was the change in amount of long term debt between 2014 and 2012?
Choices:
29628
0
28987000000
28987.0
-28987
Correct choice index: 3