united parcel service , inc .and subsidiaries management's discussion and analysis of financial condition and results of operations liquidity and capital resources operating activities the following is a summary of the significant sources ( uses ) of cash from operating activities ( amounts in millions ) : .
[['', '2013', '2012', '2011'], ['net income', '$ 4372', '$ 807', '$ 3804'], ['non-cash operating activities ( a )', '3318', '7313', '4578'], ['pension and postretirement plan contributions ( ups-sponsored plans )', '-212 ( 212 )', '-917 ( 917 )', '-1436 ( 1436 )'], ['income tax receivables and payables', '-155 ( 155 )', '280', '236'], ['changes in working capital and other noncurrent assets and liabilities', '121', '-148 ( 148 )', '-12 ( 12 )'], ['other operating activities', '-140 ( 140 )', '-119 ( 119 )', '-97 ( 97 )'], ['net cash from operating activities', '$ 7304', '$ 7216', '$ 7073']]
( a ) represents depreciation and amortization , gains and losses on derivative and foreign exchange transactions , deferred income taxes , provisions for uncollectible accounts , pension and postretirement benefit expense , stock compensation expense , impairment charges and other non-cash items .cash from operating activities remained strong throughout the 2011 to 2013 time period .operating cash flow was favorably impacted in 2013 , compared with 2012 , by lower contributions into our defined benefit pension and postretirement benefit plans ; however , this was partially offset by certain tnt express transaction-related charges , as well as changes in income tax receivables and payables .we paid a termination fee to tnt express of 20ac200 million ( $ 268 million ) under the agreement to terminate the merger protocol in the first quarter of 2013 .additionally , the cash payments for income taxes increased in 2013 compared with 2012 , and were impacted by the timing of current tax deductions .except for discretionary or accelerated fundings of our plans , contributions to our company-sponsored pension plans have largely varied based on whether any minimum funding requirements are present for individual pension plans .2022 in 2013 , we did not have any required , nor make any discretionary , contributions to our primary company-sponsored pension plans in the u.s .2022 in 2012 , we made a $ 355 million required contribution to the ups ibt pension plan .2022 in 2011 , we made a $ 1.2 billion contribution to the ups ibt pension plan , which satisfied our 2011 contribution requirements and also approximately $ 440 million in contributions that would not have been required until after 2011 .2022 the remaining contributions in the 2011 through 2013 period were largely due to contributions to our international pension plans and u.s .postretirement medical benefit plans .as discussed further in the 201ccontractual commitments 201d section , we have minimum funding requirements in the next several years , primarily related to the ups ibt pension , ups retirement and ups pension plans .as of december 31 , 2013 , the total of our worldwide holdings of cash and cash equivalents was $ 4.665 billion .approximately 45%-55% ( 45%-55 % ) of cash and cash equivalents was held by foreign subsidiaries throughout the year .the amount of cash held by our u.s .and foreign subsidiaries fluctuates throughout the year due to a variety of factors , including the timing of cash receipts and disbursements in the normal course of business .cash provided by operating activities in the united states continues to be our primary source of funds to finance domestic operating needs , capital expenditures , share repurchases and dividend payments to shareowners .to the extent that such amounts represent previously untaxed earnings , the cash held by foreign subsidiaries would be subject to tax if such amounts were repatriated in the form of dividends ; however , not all international cash balances would have to be repatriated in the form of a dividend if returned to the u.s .when amounts earned by foreign subsidiaries are expected to be indefinitely reinvested , no accrual for taxes is provided. .

Question: what percentage of net cash from operating activities was derived from non-cash operating activities in 2013?
Answer: 45%