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Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details)

v3.20.4
Summary of Significant Accounting Policies (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Allowance for Doubtful Accounts Receivable, Current $ 17 $ 18 Ìý
Provision for Doubtful Accounts 61 56 $ 68
Accounts Receivable, Allowance for Credit Loss, Writeoff 62 59 60
Marketable equity securities 266 353 Ìý
Property, Plant and Equipment, Gross 4,017 3,780 Ìý
Depreciation 268 271 $ 251
Interest Costs Capitalized 19 17 Ìý
Liberty SiriusXM Group Ìý Ìý Ìý
Property, Plant and Equipment, Gross 2,842 2,686 Ìý
Braves Group Ìý Ìý Ìý
Property, Plant and Equipment, Gross 977 923 Ìý
Formula One Group Ìý Ìý Ìý
Property, Plant and Equipment, Gross 198 171 Ìý
Land Ìý Ìý Ìý
Property, Plant and Equipment, Gross 139 138 Ìý
Building and Improvements Ìý Ìý Ìý
Property, Plant and Equipment, Gross 836 783 Ìý
Support Equipment Ìý Ìý Ìý
Property, Plant and Equipment, Gross $ 748 630 Ìý
Satellite system Ìý Ìý Ìý
Property, Plant and Equipment, Useful Life 15 years Ìý Ìý
Property, Plant and Equipment, Gross $ 1,709 1,694 Ìý
Construction in Progress Ìý Ìý Ìý
Property, Plant and Equipment, Gross $ 585 $ 535 Ìý
Minimum | Building and Improvements Ìý Ìý Ìý
Property, Plant and Equipment, Useful Life 10 years Ìý Ìý
Minimum | Support Equipment Ìý Ìý Ìý
Property, Plant and Equipment, Useful Life 3 years Ìý Ìý
Maximum | Building and Improvements Ìý Ìý Ìý
Property, Plant and Equipment, Useful Life 40 years Ìý Ìý
Maximum | Support Equipment Ìý Ìý Ìý
Property, Plant and Equipment, Useful Life 20 years Ìý Ìý