Information about Segments and Geographic Areas - Revenue and Operating Income/Loss by Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Hedging gains (losses)	$ (112)	$ 102	$ 148	$ 174
Revenues	96,428	84,742	186,662	165,281
Total income from operations	31,271	27,425	61,877	52,897
Total costs and expenses	65,157	57,317	124,785	112,384
Reconciling items
Segment Reporting Information [Line Items]
Total income from operations	(3,372)	(2,287)	(6,399)	(4,592)
Google Services
Segment Reporting Information [Line Items]
Revenue from contract with customers	82,543	73,928	159,807	144,326
Employee compensation expenses	11,306	11,240	22,643	22,751
Other costs and expenses	38,174	33,014	71,419	64,004
Total costs and expenses	49,480	44,254	94,062	86,755
Google Services | Operating Segments
Segment Reporting Information [Line Items]
Total income from operations	33,063	29,674	65,745	57,571
Google Cloud
Segment Reporting Information [Line Items]
Revenue from contract with customers	13,624	10,347	25,884	19,921
Employee compensation expenses	5,517	5,175	10,929	10,332
Other costs and expenses	5,281	4,000	9,952	7,517
Total costs and expenses	10,798	9,175	20,881	17,849
Google Cloud | Operating Segments
Segment Reporting Information [Line Items]
Total income from operations	2,826	1,172	5,003	2,072
Other Bets
Segment Reporting Information [Line Items]
Revenue from contract with customers	373	365	823	860
Other Bets | Operating Segments
Segment Reporting Information [Line Items]
Total income from operations	$ (1,246)	$ (1,134)	$ (2,472)	$ (2,154)