In 7.1, Special Strategic Air Mission Restrictions : A friendly airfield or aircraft carrier with no INT air units that is situated within four hexes of a non-damaged anemy airfield or carrier with at least one INT air unit cannot have its air units perform any strategic mission.
So, enemy INT in airfield and carrier may prevent eligibility for Strategic Missions.
In 9.2, Strategic Detection Segment :
1. Air unit on Reconnaissance mission cannot place a Strategic Detection marker on enemy surface units if they occupy or are adjacent to enemy INT units on a non-damaged airfield.
Nothing about carrier, so it seems INT on carrier (even on CAP) can't prevent CV TF being detected.
2. Air unit on Reconnaissance mission cannot place a Strategic Detection marker on enemy submarine if situated four hexes of an enemy INT unit.
So, any INT (even on a carrier and/or on CAP) may prevent detection.
Comparing 1. and 2., an INT on carrier can't prevent surface units being detected in its hex but may prevent submarine being detected within four hexes ??
I'm not familiar enough with the game to indicate whether this is correct or not. That said, checking the 3rd Fleet rules, the "notable exception" to 9.2 adds "enemy INT unit on a non-damaged airfield" just like the exception for 9.1.
I'd probably play it as they meant it like the 3rd Fleet rules just to be consistent.