Information about Segments and Geographic Areas (Revenue by Segment) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Revenue	$ 38,297	$ 38,944	$ 79,456	$ 75,283
Hedging gains (losses)	151	108	200	245
Google
Segment Reporting Information [Line Items]
Revenue	37,998	38,674	78,973	74,706
Other Bets
Segment Reporting Information [Line Items]
Revenue	$ 148	$ 162	$ 283	$ 332