Limit on number of available messages on SQS

Based on the documentation (AWS SQS Limits) the maximum number of inflight messages per queue (in a standard queue) is 120,000.
But does SQS have any limit for available messages in a queue?
I'd guess that there is no limit on the number of messages that a queue can hold in SQS, but I haven't found any explicit statement on the documentation about it.