Description of Business, Accounting Policies, and Supplemental Disclosures - Use of Estimates (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2024	Dec. 31, 2022	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2025	Jan. 01, 2024
Property, Plant and Equipment [Line Items]
Net income (loss)				$ 59,248	$ 30,425	$ (2,722)
Accelerated depreciation and amortization expense				$ 52,795	$ 48,663	$ 41,921
Basic earnings per share (in dollars per share)				$ 5.66	$ 2.95	$ (0.27)
Diluted earnings per share (in dollars per share)				$ 5.53	$ 2.90	$ (0.27)
Impairments		$ 720				$ 1,100
Expenses for terminating contracts						480
Severance costs		$ 640				$ 720
Change In Property And Equipment Useful Life
Property, Plant and Equipment [Line Items]
Net income (loss)				$ 2,500
Accelerated depreciation and amortization expense				$ (3,200)
Basic earnings per share (in dollars per share)				$ 0.23
Diluted earnings per share (in dollars per share)				$ 0.23
Servers and Networking Equipment | Change In Property And Equipment Useful Life | Forecast
Property, Plant and Equipment [Line Items]
Net income (loss)			$ (700)
Servers and Networking Equipment | Early Retirement
Property, Plant and Equipment [Line Items]
Accelerated depreciation and amortization expense	$ 920
Servers and Networking Equipment | Early Retirement | Forecast
Property, Plant and Equipment [Line Items]
Net income (loss)			(600)
Servers
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	6 years			6 years	5 years
Servers | Change In Property And Equipment Useful Life
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets								6 years
Servers | Change In Property And Equipment Useful Life | Subsequent event
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets							5 years
Networking equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	6 years			6 years
Networking equipment | Change In Property And Equipment Useful Life | Subsequent event
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets							5 years
Heavy equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	10 years			10 years
Heavy equipment | Change In Property And Equipment Useful Life | Subsequent event
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets							13 years
Heavy equipment | Change In Property And Equipment Useful Life | Forecast
Property, Plant and Equipment [Line Items]
Net income (loss)			$ 900