Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash Flows From Operating Activities:
Net income	$ 659us-gaap_NetIncomeLoss	$ 10,540us-gaap_NetIncomeLoss	$ 1,009us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,771us-gaap_DepreciationAndAmortization	1,658us-gaap_DepreciationAndAmortization	1,565us-gaap_DepreciationAndAmortization
Amortization of debt discount, net	59	154	193
Hedge derivative contracts	2,186	(86)	(209)
Deferred income taxes	414us-gaap_DeferredIncomeTaxExpenseBenefit	(7,991)us-gaap_DeferredIncomeTaxExpenseBenefit	17us-gaap_DeferredIncomeTaxExpenseBenefit
Pension, postretirement and postemployment expense less than payments	(723)	(624)	(208)
Restructuring and other items	758	285	184
Extinguishment of debt	268	0	118
Equity investment loss (earnings)	106	(24)	0
SkyMiles used pursuant to advance purchase under American Express Agreements	0	(333)	(333)
Changes in certain assets and liabilities:
Receivables	(302)us-gaap_IncreaseDecreaseInReceivables	90us-gaap_IncreaseDecreaseInReceivables	(116)us-gaap_IncreaseDecreaseInReceivables
Restricted cash and cash equivalents	62	231	(51)
Fuel inventory	172us-gaap_IncreaseDecreaseInInventories	(87)us-gaap_IncreaseDecreaseInInventories	(451)us-gaap_IncreaseDecreaseInInventories
Hedge margin	(922)	14	14
Prepaid expenses and other current assets	58	28	(134)
Air traffic liability	174	426	216
Frequent flyer deferred revenue	(238)	(121)	(115)
Accounts payable and accrued liabilities	228	213	899
Other, net	217	131	(122)
Net cash provided by operating activities	4,947	4,504	2,476
Cash Flows From Investing Activities:
Flight equipment, including advance payments	(1,662)us-gaap_PaymentsForFlightEquipment	(2,117)us-gaap_PaymentsForFlightEquipment	(1,196)us-gaap_PaymentsForFlightEquipment
Ground property and equipment, including technology	(587)	(451)	(772)
Purchase of Virgin Atlantic shares	0	(360)	0
Purchase of short-term investments	(1,795)us-gaap_PaymentsToAcquireInvestments	(959)us-gaap_PaymentsToAcquireInvestments	(958)us-gaap_PaymentsToAcquireInvestments
Redemption of short-term investments	1,533	1,117	1,019
Other, net	48	14	(55)
Net cash used in investing activities	(2,463)	(2,756)	(1,962)
Cash Flows From Financing Activities:
Payments on long-term debt and capital lease obligations	(2,928)	(1,461)	(2,864)
Repurchase of common stock	(1,100)	(250)	0
Cash dividends	(251)us-gaap_PaymentsOfDividends	(102)us-gaap_PaymentsOfDividends	0us-gaap_PaymentsOfDividends
Proceeds from long-term obligations	1,020	268	1,965
Other, net	19	225	144
Net cash used in financing activities	(3,240)	(1,320)	(755)
Net (Decrease) Increase in Cash and Cash Equivalents	(756)	428	(241)
Cash and cash equivalents at beginning of period	2,844	2,416	2,657
Cash and cash equivalents at end of period	2,088	2,844	2,416
Supplemental Disclosure of Cash Paid for Interest	560us-gaap_InterestPaid	698us-gaap_InterestPaid	834us-gaap_InterestPaid
Non-Cash Transactions:
Flight equipment under capital leases	28us-gaap_CapitalLeaseObligationsIncurred	67us-gaap_CapitalLeaseObligationsIncurred	28us-gaap_CapitalLeaseObligationsIncurred
Built-to-suit leased facilities	7	114	214
American Express advance purchase of restricted SkyMiles	$ 0dal_TransferofDebttoDeferredRevenue	$ 285dal_TransferofDebttoDeferredRevenue	$ 0dal_TransferofDebttoDeferredRevenue

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- Definition

Other cash or noncash adjustments to reconcile net income to cash provided by (used in) operating activities that are not separately disclosed in the statement of cash flows (for example, cash received or cash paid during the current period for miscellaneous operating activities, net change during the reporting period in other assets or other liabilities).

+ References

No definition available.

+ Details

Name:	us-gaap_OtherOperatingActivitiesCashFlowStatement
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for acquisition of long-lived depreciable flight assets, including owned aircraft or capital improvements.

+ References

No definition available.

+ Details

Name:	us-gaap_PaymentsForFlightEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The net cash outflow or inflow from other investing 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 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 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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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow to reacquire common stock during the period.

+ References

+ Details

Name:	us-gaap_PaymentsForRepurchaseOfCommonStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

+ References

+ Details

Name:	us-gaap_PaymentsOfDividends
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

+ References

+ Details

Name:	us-gaap_PaymentsToAcquireInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow for acquisition of or capital improvements on other tangible or intangible assets not otherwise defined in the taxonomy.

+ References

+ Details

Name:	us-gaap_PaymentsToAcquireOtherProductiveAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of pension and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for (1) defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss) on assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments) and for (2) defined contribution plans (to the extent that a plan's defined contributions to an individual's account are to be made for periods in which that individual renders services, the net cost for a period is the contribution called for in that period; if a plan calls for contributions for periods after an individual retires or terminates, the estimated cost is accrued during the employee's service period).

+ References

+ Details

Name:	us-gaap_PensionAndOtherPostretirementBenefitExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth 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 12

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

+ Details

Name:	us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

+ Details

Name:	us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

+ References

+ Details

Name:	us-gaap_RestructuringCostsAndAssetImpairmentCharges
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