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Information about Segments and Geographic Areas - Revenue and Operating Income/Loss by Segment (Details) $ in Millions, € in Billions								12 Months Ended
	Sep. 14, 2022 EUR (€)	Mar. 20, 2019 USD ($)	Mar. 20, 2019 EUR (€)	Jun. 30, 2018 USD ($)	Jun. 30, 2018 EUR (€)	Jun. 27, 2017 USD ($)	Jun. 27, 2017 EUR (€)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Revenues from contract with customer								$ 307,394	$ 282,836	$ 257,637
Hedging gains (losses)								236	1,960	149
Segment operating income / (loss)								84,293	74,842	78,714
Unfavorable Regulatory Action
Segment Reporting Information [Line Items]
Loss contingency, loss in period	€ 4.1	$ 1,700	€ 1.5	$ 5,100	€ 4.3	$ 2,700	€ 2.4				$ 5,100
Google Services
Segment Reporting Information [Line Items]
Revenues from contract with customer								272,543	253,528	237,529
Google Cloud
Segment Reporting Information [Line Items]
Revenues from contract with customer								33,088	26,280	19,206
Other Bets
Segment Reporting Information [Line Items]
Revenues from contract with customer								1,527	1,068	753
Operating Segments \| Google Services
Segment Reporting Information [Line Items]
Segment operating income / (loss)								95,858	82,699	88,132
Operating Segments \| Google Cloud
Segment Reporting Information [Line Items]
Segment operating income / (loss)								1,716	(1,922)	(2,282)
Operating Segments \| Other Bets
Segment Reporting Information [Line Items]
Segment operating income / (loss)								(4,095)	(4,636)	(4,051)
Reconciling items
Segment Reporting Information [Line Items]
Segment operating income / (loss)								$ (9,186)	$ (1,299)	$ (3,085)