https://www.ibm.com/annualreport/assets/past-reports/1997-ib...
If I put effort into it, I'm sure I could link you to corporate financial statements from the early 1970s after Bretton Woods when currencies became free-floating, necessitating this calculation.
How else would you report it? Break out separate income statements for all 100+ currencies Google deals with, so you can see how many Peruvian Sols they earned in Q3 2022 and ignore currency exchange rate fluctuations?
Things get funky when you start seeing "community adjusted EBITDA" and its cousins.
Just because something is widely used doesn't mean it's guaranteed to be actually correct or reflect reality.
For example: It never makes sense to exclude depreciation for anything physical without adding back on some cost of wear-and-tear, since everything physical suffers wear and tear. I've never seen this happen in reports with EBITDA figures, nor in this report.
i.e. They're effectively presenting 'profit' figures that exclude some amount of real, tangible, losses. So it's really only a pseudo-profit, which is why there's a separate 'Net Profit' figure in every SEC compliant report.
It's a proxy for some things, which as I said has limitations like any other proxy.
Why do you believe it's impossible for it to be funky?
https://www.google.com/finance/quote/USD-JPY?sa=X&ved=2ahUKE...
And…they list the USD-denominated revenues. They say the revenue right there in the sentence you quoted, and further along in the PDF, they break it down per region.
Not shenanigans. Commonly accepted. And makes sense, as the US dollar is the de facto world currency, and everything else swings in its wind.
"Constant Currency Basis" seems to be the latest innovation in the non-GAAP methods of reporting revenue. The creativity of the financial industry never ceases to impress.
Thankfully we do have a set of "Generally Accepted Accounting Principles" that helps see through the bull.