pre_text: table of contents the foreign provision for income taxes is based on foreign pre-tax earnings of $ 33.6 billion , $ 30.5 billion and $ 36.8 billion in 2014 , 2013 and 2012 , respectively . the company 2019s consolidated financial statements provide for any related tax liability on undistributed earnings that the company does not intend to be indefinitely reinvested outside the u.s . substantially all of the company 2019s undistributed international earnings intended to be indefinitely reinvested in operations outside the u.s . were generated by subsidiaries organized in ireland , which has a statutory tax rate of 12.5% ( 12.5 % ) . as of september 27 , 2014 , u.s . income taxes have not been provided on a cumulative total of $ 69.7 billion of such earnings . the amount of unrecognized deferred tax liability related to these temporary differences is estimated to be approximately $ 23.3 billion . 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 . a reconciliation of the provision for income taxes , with the amount computed by applying the statutory federal income tax rate ( 35% ( 35 % ) in 2014 , 2013 and 2012 ) to income before provision for income taxes for 2014 , 2013 and 2012 , is as follows ( dollars in millions ) : the company 2019s income taxes payable have been reduced by the tax benefits from employee stock plan awards . for stock options , the company receives an income tax benefit calculated as the tax effect of the difference between the fair market value of the stock issued at the time of the exercise and the exercise price . for rsus , the company receives an income tax benefit upon the award 2019s vesting equal to the tax effect of the underlying stock 2019s fair market value . the company had net excess tax benefits from equity awards of $ 706 million , $ 643 million and $ 1.4 billion in 2014 , 2013 and 2012 , respectively , which were reflected as increases to common stock . apple inc . | 2014 form 10-k | 64 .
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table: 2014 2013 2012
table: Computed expected tax $18,719 $17,554 $19,517
table: State taxes, net of federal effect 469 508 677
table: Indefinitely invested earnings of foreign subsidiaries (4,744) (4,614) (5,895)
table: Research and development credit, net (88) (287) (103)
table: Domestic production activities deduction (495) (308) (328)
table: Other 112 265 162
table: Provision for income taxes $13,973 $13,118 $14,030
table: Effective tax rate 26.1% 26.2% 25.2%
question: Analyse this data from a financial earnings document. what was the change between september 27 , 2014 and september 28 , 2013 of the company 2019s cash , cash equivalents and marketable securities held by foreign subsidiaries based in u.s . dollar-denominated holdings , in billions?