Acquisitions Acquisition Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Jun. 29, 2019	Mar. 20, 2019	Sep. 29, 2018
Business Acquisition [Line Items]
Goodwill	$ 77,801		$ 31,269
Initial Allocation | 21CF
Business Acquisition [Line Items]
Cash and cash equivalents		$ 25,666
Receivables		4,746
Film and Television Costs		20,120
Investments		1,471
Intangible Assets		20,385
Net Assets Held for Sale		11,704
Accounts Payable and Other Liabilities		(10,753)
Borrowings		(21,723)
Deferred Income Taxes		(6,497)
Other Net Liabilities Acquired		(3,865)
Noncontrolling Interest		(10,638)
Goodwill		43,751
Fair Value of Net Assets Acquired		74,367
Parents Previously Held Equity Interest in Investee Now Consolidated		(4,860)
Total Purchase Price		69,507
Valuation Adjustments | 21CF
Business Acquisition [Line Items]
Cash and cash equivalents		0
Receivables		154
Film and Television Costs		(2,135)
Investments		53
Intangible Assets		(1,325)
Net Assets Held for Sale		(414)
Accounts Payable and Other Liabilities		(1,357)
Borrowings		0
Deferred Income Taxes		975
Other Net Liabilities Acquired		1,060
Noncontrolling Interest		96
Goodwill		2,770
Fair Value of Net Assets Acquired		(123)
Parents Previously Held Equity Interest in Investee Now Consolidated		123
Total Purchase Price		0
Updated Allocation | 21CF
Business Acquisition [Line Items]
Cash and cash equivalents		25,666
Receivables		4,900
Film and Television Costs		17,985
Investments		1,524
Intangible Assets		19,060
Net Assets Held for Sale		11,290
Accounts Payable and Other Liabilities		(12,110)
Borrowings		(21,723)
Deferred Income Taxes		(5,522)
Other Net Liabilities Acquired		(2,805)
Noncontrolling Interest		(10,542)
Goodwill		46,521
Fair Value of Net Assets Acquired		74,244
Parents Previously Held Equity Interest in Investee Now Consolidated		(4,737)
Total Purchase Price		$ 69,507