Quarterly report pursuant to Section 13 or 15(d)

Investments In Affiliates Accounted For Using The Equity Method (Liberty Broadband's Consolidated Statement Of Operations) (Details)

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Investments In Affiliates Accounted For Using The Equity Method (Liberty Broadband's Consolidated Statement Of Operations) (Details) - Liberty Broadband - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Revenue $ 3 $ 21 $ 10 $ 27
Operating expenses, net 9 14 29 41
Operating income (loss) (6) 7 (19) (14)
Share of earnings (losses) of affiliates (5) 19 25 570
Realized and unrealized gains (losses) on financial instruments, net 3   5 93
Gain (loss) on dilution of investment in affiliate (4) (16) (42) 760
Other income (expense), net (5) (4) (14) (5)
Income tax benefit (expense) 7 (2) 18 (532)
Net earnings (loss) $ (10) $ 4 $ (27) $ 872