Business Acquisition and Equity Method Investment [Line Items]

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Business Combination Dividend Distribution

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Business Combination Dividend Distribution, Change in Amount of Dividend Distribution

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Business combination, recognized liabilities, net debt

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Exchange Ratio used in calculation of Acquisition

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- Definition

Preferred Stock Return on NCI Accretion Percent

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- Definition

Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

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-Name Accounting Standards Codification
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Number of shares of equity interests issued or issuable to acquire entity.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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- Definition

Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The loss recognized on termination of a contract.

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Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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Redemption value, as if currently redeemable, of redeemable noncontrolling interest classified as temporary equity and the election has been made to accrete changes in redemption value to the earliest redemption date.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Acquisitions - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended
	Dec. 14, 2017	Dec. 30, 2017	Sep. 30, 2017	Sep. 25, 2017	Apr. 01, 2017
Business Acquisition And Equity Method Investments
Goodwill		$ 31,430	$ 31,426
Redeemable Noncontrolling Interest		1,142	$ 1,148
BAMTech, LLC [Member]
Business Acquisition And Equity Method Investments
Goodwill				$ 3,600
Redeemable Noncontrolling Interest				1,100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net				$ 3,900
Equity Method Investment, Ownership Percentage			75.00%	42.00%	33.00%
Revenue and expense		100
BAMTech, LLC [Member] \| NHL [Member]
Business Acquisition And Equity Method Investments
Redeemable Noncontrolling Interest, Equity, Redemption Value				$ 500
BAMTech, LLC [Member] \| MLB [Member]
Business Acquisition And Equity Method Investments
Redeemable Noncontrolling Interest, Equity, Redemption Value		574
BAMTech Notes Payable [Member] \| BAMTech, LLC [Member]
Business Acquisition And Equity Method Investments
Notes Payable, Current				1,600
Minimum \| NHL [Member] \| BAMTech, LLC [Member]
Business Acquisition And Equity Method Investments
Redeemable Noncontrolling Interest, Equity, Redemption Value				300
Minimum \| BAMTech, LLC [Member] \| MLB [Member]
Business Acquisition And Equity Method Investments
Redeemable Noncontrolling Interest, Equity, Redemption Value				$ 563
Preferred Stock on NCI Accretion Percentage				8.00%
Maximum \| NHL [Member] \| BAMTech, LLC [Member]
Business Acquisition And Equity Method Investments
Redeemable Noncontrolling Interest, Equity, Redemption Value				$ 350
Pending Approval [Member] \| 21CF [Member]
Business Acquisition And Equity Method Investments
Exchange Ratio used in calculation of Acquisition	$ 0.2745
Business Combination Dividend Distribution	$ 8,500
Business Combination Dividend Distribution, Change in Amount of Dividend Distribution	$ 2,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	515
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	$ 52,400
Business combination, recognized liabilities, net debt			$ 13,700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			20,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			$ 6,300
Loss on Contract Termination		2,500
Gain (Loss) on Contract Termination		$ 1,500