Acquisitions and Dispositions (OWN) (Details) - Harpo - USD ($) $ in Millions |
3 Months Ended | ||
---|---|---|---|
Nov. 30, 2017 |
Mar. 31, 2018 |
Nov. 29, 2017 |
|
Business Acquisition [Line Items] | |||
Percentage of voting interests acquired | 73.75% | 49.50% | |
Cash portion of purchase price | $ 70 | ||
Remeasurement gain on previously held equity interest | $ 33 | ||
Variable interest entity, consolidated, carrying amount, assets | $ 733 | ||
Variable interest entity, consolidated, carrying amount, liabilities | $ 267 | ||
Acquired finite-lived intangible assets, weighted average useful life | 9 years | ||
Subsequent Acquisition, Window One | |||
Business Acquisition [Line Items] | |||
Step acquisition, subsequent acquisition, term of window | 90 days | ||
Subsequent Acquisition, Window Two | |||
Business Acquisition [Line Items] | |||
Step acquisition, subsequent acquisition, term of window | 2 years 6 months |