|
Supplemental Financial Information (Noncash Investing and Financing Activities)(Details) (USD $)
|
12 Months Ended | 11 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Mar. 19, 2013
|
Jan. 28, 2011
|
Dec. 31, 2011
NBCUniversal Media, LLC [Member]
|
Dec. 31, 2013
NBCUniversal Media, LLC [Member]
|
Dec. 31, 2012
NBCUniversal Media, LLC [Member]
|
Dec. 31, 2013
NBCUniversal Enterprise Credit Facility
|
Dec. 31, 2013
NBCUniversal Enterprise Senior Unsecured Debt Securities
|
Dec. 31, 2013
NBCUniversal Enterprise Preferred Stock
|
|
| Remaining equity interest acquired | 49.00% | ||||||||||
| Purchase of NBCUniversal noncontrolling interest | $ 16,700,000,000 | ||||||||||
| Consideration transferred related to the Redemption Transaction and purchase of certain properties | 1,250,000,000 | 4,000,000,000 | 725,000,000 | ||||||||
| Total noncash consideration transferred related to the Redemption Transaction | 6,000,000,000 | ||||||||||
| Dividends payable, amount | 509,000,000 | 430,000,000 | 305,000,000 | ||||||||
| Dividends payable, amount per share | $ 0.1950 | $ 0.1625 | $ 0.1125 | ||||||||
| Capital expenditures incurred but not yet paid | 872,000,000 | 757,000,000 | 1,000,000,000 | ||||||||
| Noncash or Part Noncash Acquisition, Fixed Assets Acquired | 85,000,000 | 85,000,000 | |||||||||
| Fair Value Equity Securities Settlement | 1,400,000,000 | ||||||||||
| Ownership percentage | 51.00% | 51.00% | |||||||||
| Percentage of Comcast Content Business contributed | 49.00% | ||||||||||
| Capital expenditures and cash paid for intangible assets incurred but not yet paid | $ 339,000,000 | $ 306,000,000 | |||||||||