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Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |  |
Net income | $ 608 | $ 465 | $ 1,061 | $ 617
Adjustments to reconcile net income to cash provided by (used in) operating activities: |  |  |  |
Depreciation and amortization | 250 | 228 | 494 | 449
Unrealized/realized (gain) loss on fuel derivative instruments | 74 | (7) | 85 | (67)
Deferred income taxes | 23 | (11) | 43 | 81
Changes in certain assets and liabilities: |  |  |  |
Accounts and other receivables | 41 | 10 | (90) | (61)
Other assets | (7) | (21) | 6 | (14)
Accounts payable and accrued liabilities | (134) | 424 | 43 | 448
Air traffic liability | 201 | 153 | 918 | 914
Cash collateral received from (provided to) derivative counterparties | (377) | 95 | (394) | 106
Other, net | (52) | 2 | (87) | (15)
Net cash provided by operating activities | 627 | 1,338 | 2,079 | 2,458
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |  |
Capital expenditures | (428) | (481) | (1,001) | (876)
Assets constructed for others | (22) | (19) | (44) | (31)
Purchases of short-term investments | (562) | (1,159) | (877) | (1,929)
Proceeds from sales of short-term and other investments | 614 | 803 | 1,223 | 1,622
Payments for (Proceeds from) Other Investing Activities | (9) | (1) | (9) | (1)
Net cash used in investing activities | (407) | (857) | (708) | (1,215)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |  |
Proceeds from Employee stock plans | 8 | 25 | 21 | 73
Proceeds from termination of interest rate derivative instruments | 0 | 0 | 12 | 0
Reimbursement for assets constructed for others | 3 | 0 | 5 | 0
Payments of long-term debt and capital lease obligations | (40) | (73) | (92) | (119)
Payments of cash dividends | (50) | (42) | (131) | (97)
Repayment of construction obligation | (3) | (2) | (5) | (5)
Repurchase of common stock | (380) | (240) | (680) | (555)
Other, net | (11) | (8) | (11) | (13)
Net cash used in financing activities | (473) | (340) | (881) | (716)
NET CHANGE IN CASH AND CASH EQUIVALENTS | (253) | 141 | 490 | 527
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD | 2,025 | 1,741 | 1,282 | 1,355
CASH AND CASH EQUIVALENTS AT END OF PERIOD | 1,772 | 1,882 | 1,772 | 1,882
CASH PAYMENTS FOR: |  |  |  |
Interest, net of amount capitalized | 21 | 33 | 53 | 67
Income taxes | 455 | 12 | 566 | 12
SUPPLEMENTAL DISCLOSURE OF NONCASH TRANSACTIONS |  |  |  |
Assets constructed for others | $ 37 | $ 19 | $ 80 | $ 31

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- Definition The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The net cash inflow or outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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- Definition The cash inflow associated with the amount received from the stock plan during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash outflow associated with security instruments that either represent a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes repayments of (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- References No definition available. + Details
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open derivatives, commodity, or energy contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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