Commitments and Contingencies - Contractual Commitments for Broadcast Programming Rights, Future Minimum Lease Payments Under Non-Cancelable Operating Leases, Cruise Ships, Creative Talent and Other Commitments (Detail) $ in Millions	Sep. 30, 2017 USD ($)
Commitments and Contingencies [Line Items]
2018	$ 9,067
2019	8,338
2020	8,022
2021	7,402
2022	6,028
Thereafter	19,452
Commitments	58,309
Operating Leases, 2018	580
Operating Leases, 2019	472
Operating Leases, 2020	401
Operating Leases, 2021	324
Operating Leases, 2022	244
Operating Leases, Thereafter	1,327
Operating Leases	3,348
Broadcast programming
Commitments and Contingencies [Line Items]
2018	6,662
2019	6,868
2020	6,844
2021	6,694
2022	4,779
Thereafter	15,701
Commitments	47,548
Other Commitments
Commitments and Contingencies [Line Items]
2018	1,825
2019	998
2020	777
2021	384
2022	1,005
Thereafter	2,424
Commitments	$ 7,413

Commitments and Contingencies - Contractual Commitments for Broadcast Programming Rights, Future Minimum Lease Payments Under Non-Cancelable Operating Leases, Cruise Ships, Creative Talent and Other Commitments (Detail)
$ in Millions

Sep. 30, 2017

USD ($)

Commitments and Contingencies [Line Items]

$ 9,067

8,338

8,022

7,402

6,028

19,452

58,309

Operating Leases, 2018

580

Operating Leases, 2019

472

Operating Leases, 2020

401

Operating Leases, 2021

324

Operating Leases, 2022

244

Operating Leases, Thereafter

1,327

Operating Leases

3,348

Broadcast programming

Commitments and Contingencies [Line Items]

6,662

6,868

6,844

6,694

4,779

15,701

47,548

Commitments and Contingencies [Line Items]

1,825

998

777

384

1,005

2,424

$ 7,413

Commitments and Contingencies [Line Items]

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