Income Taxes (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended		36 Months Ended
	Jan. 15, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2013	Dec. 31, 2019
Income Tax Contingency [Line Items]
Unrecognized tax benefits		$ 8,060		$ 8,060			$ 7,860
Unrecognized tax benefits that would result in tax benefit if realized		4,170		4,170
Accrued interest and penalties		774		774			$ 747
Cumulative income tax expense		$ 953	$ 2,216	$ 1,911	$ 3,269
Internal Revenue Service (IRS) | Tax Year 2010
Income Tax Contingency [Line Items]
Income tax examination, estimate of possible loss	$ 9,000
Internal Revenue Service (IRS) | Tax Years 2011 Through 2013
Income Tax Contingency [Line Items]
Income tax examination, estimate of possible loss						$ 680
Altera Corp V Commissioner
Income Tax Contingency [Line Items]
Cumulative income tax expense			$ 1,110