2.0 became the greatest all time film for the Tamil film industry as not only did it had the highest figures ever in terms of raw numbers but it is also had the the highest inflation adjusted grosser as no Tamil film in history has ever crossed 400 crore nett or 500 gross even in adjusted numbers. The footfalls of the film are around 4.25 crore and no Tamil film before as even topped 3 crore footfalls in India. The final NETT was a little over 413 crore nett

The film became the highest grossing Tamil film in Hindi markets, Nizam/Andhra and Karnataka. In Tamil it became the second highest NETT grosser after ENDHIRAN (2010) and the highest ever in GROSS but now the January release VISWASAM (2019) has become the highest NETT grosser and the highest film in GROSS also. (these are outside BAAHUBALI 2: THE CONCLUSION which is from the Telugu industry)

The final collections of 2.0 on all formats is as follows.
Hindi - 1,85,89,00,000
Tamil Nadu - 1,00,68,00,000 (Not Including Hindi version)
Nizam/Andhra - 71,96,00,000 (Not Including Hindi version)
Karnataka - 33,93,00,000 (Not including Hindi version)
Kerala - 15,73,00,000
Others - 5,11,00,000 (Tamil/Telugu across Hindi markets)
TOTAL - 4,13,30,00,000 

The Overseas markets grossed $19.50 million which is also a record for Tamils films by a huge margin. The final worldwide gross is as follows (this is without a China or Japan release which could happen)

India - 5,19,65,00,000
Overseas - 1,36,16,00,000
TOTAL - 6,55,81,00,000

The 656 crore apprx makes it the sixth highest grossing Indian film ever across the world allowing for all formats of release.