StarDoor on 31 October 2017
That means Super Mario Odyssey has the highest first-week sales of any Mario game.
If you align all the regional launches, Super Mario Odyssey is still higher than every game except New Super Mario Bros. Wii at 2.3 million. (And Odyssey could still be higher, since the statement was that it "exceeded" 2 million. I'm not counting on this, though.)
