#4 ENG STRIKES RWY LIGHT DURING LNDG; HOLING THE COWLING.

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I WAS FLYING THE ILS 3R TO DTW THE APCH WAS VERY STABLE. WE BROKE OUT AT 300 FT AGL. ON MY FLARE OUT THE ACFT WAS L OF THE CTRLINE SO I MADE A SMALL AILERON CORRECTION TO THE R WITH SOME CORRESPONDING L RUDDER TO KEEP THE NOSE OF THE ACFT STRAIGHT DOWN THE RWY. AT TOUCHDOWN I STILL HAD SOME R AILERON DEFLECTION. THE CAPT REACHED UP AND REMOVED THE DEFLECTION. THE LNDG APPEARED SMOOTH AND NORMAL WITH NO INDICATION OF ANYTHING ABNORMAL. WE LANDED R OF CTRLINE. WE TAXIED VIA VICTOR AND OUTER TXWYS TO GATE. AFTER DEPLANING OUR PAX; MAINT PERSONNEL ADVISED US OF DAMAGE TO THE #4 ENG LEADING EDGE INLET COWL; A HOLE 3-4 INCHES IN DIAMETER. WE LATER LEARNED THE ENG STRUCK A LNDG LIGHT AFTER LNDG (1-2 SECONDS AFTER) DUE TO THE R WING DOWN LNDG. AFTER MEETINGS WITH AIRLINE SAFETY OFFICIALS WE DETERMINED THAT PLT GROUP AWARENESS OF THE PROX OF ENG PODS TO THE RWY SURFACE DURING VARIOUS LNDG CONDITIONS WOULD HELP PLTS BE MORE AWARE OF THIS THREAT. IT WAS BROUGHT TO MY ATTN THAT THIS TYPE OF INCIDENT IS NOT UNCOMMON TO THE WDB. SUPPLEMENTAL INFO FROM ACN 236950: WIND RPTED 200/07. FO FLYING APCH MANUALLY USING FLT DIRECTOR. 2 DEGS R DRIFT ON APCH. APCH LIGHTS IN SIGHT AT 300 FT. RWY IN SIGHT AT 200 FT. R WING DOWN FOR CORRECTION TO R. TOUCHDOWN SLIGHTLY TO R OF CTRLINE. JUST BEFORE TOUCHDOWN I INPUT L AILERON TO LEVEL WINGS BUT WAS TOO LATE. #4 ENG POD MADE GND CONTACT ON TOUCHDOWN. I WAS UNCOMFORTABLE WITH DEG OF R WING DOWN ON TOUCHDOWN AND SHOULD HAVE APPLIED L AILERON SOONER.