diff --git a/server/ptc_api_server.py b/server/ptc_api_server.py
index 1d3b5fe..1bf6f59 100644
--- a/server/ptc_api_server.py
+++ b/server/ptc_api_server.py
@@ -1210,6 +1210,8 @@ def calculate_monthly_shared_distribution(
     common_overall_basis_total = 0.0
     labor_allocation_details: list[dict] = []
     common_allocation_details: list[dict] = []
+    labor_account_allocation_details: dict[str, list[dict]] = defaultdict(list)
+    common_account_allocation_details: dict[str, list[dict]] = defaultdict(list)
     labor_account_allocated: dict[str, float] = defaultdict(float)
     common_account_allocated: dict[str, float] = defaultdict(float)
     for ym in candidate_months:
@@ -1265,7 +1267,21 @@ def calculate_monthly_shared_distribution(
                 }
             )
             for account_code, account_amount in (labor_pool_accounts_by_month.get(ym) or {}).items():
-                labor_account_allocated[account_code] += float(account_amount or 0.0) * ratio
+                account_amount_value = float(account_amount or 0.0)
+                allocated_value = account_amount_value * ratio
+                labor_account_allocated[account_code] += allocated_value
+                labor_account_allocation_details[account_code].append(
+                    {
+                        "year_month": ym,
+                        "source_amount": account_amount_value,
+                        "project_basis_amount": base_value,
+                        "total_basis_amount": total_value,
+                        "display_project_basis_amount": display_project_basis_amount,
+                        "display_total_basis_amount": display_total_basis_amount,
+                        "used_equal_split": used_equal_split,
+                        "allocated_amount": allocated_value,
+                    }
+                )
         if common_pool:
             common_allocation_details.append(
                 {
@@ -1280,7 +1296,21 @@ def calculate_monthly_shared_distribution(
                 }
             )
             for account_code, account_amount in (common_pool_accounts_by_month.get(ym) or {}).items():
-                common_account_allocated[account_code] += float(account_amount or 0.0) * ratio
+                account_amount_value = float(account_amount or 0.0)
+                allocated_value = account_amount_value * ratio
+                common_account_allocated[account_code] += allocated_value
+                common_account_allocation_details[account_code].append(
+                    {
+                        "year_month": ym,
+                        "source_amount": account_amount_value,
+                        "project_basis_amount": base_value,
+                        "total_basis_amount": total_value,
+                        "display_project_basis_amount": display_project_basis_amount,
+                        "display_total_basis_amount": display_total_basis_amount,
+                        "used_equal_split": used_equal_split,
+                        "allocated_amount": allocated_value,
+                    }
+                )
 
     return {
         "labor_shared": labor_shared,
@@ -1295,6 +1325,8 @@ def calculate_monthly_shared_distribution(
         "common_allocation_details": common_allocation_details,
         "labor_account_allocated": dict(labor_account_allocated),
         "common_account_allocated": dict(common_account_allocated),
+        "labor_account_allocation_details": dict(labor_account_allocation_details),
+        "common_account_allocation_details": dict(common_account_allocation_details),
     }
 
 
@@ -1556,6 +1588,7 @@ def build_project_lifecycle_cost(
         project_entry["shared_expense_supply"] += labor_shared
         project_entry["expense_supply"] += labor_shared
         labor_account_allocated = monthly_shared.get("labor_account_allocated") or {}
+        labor_account_allocation_details = monthly_shared.get("labor_account_allocation_details") or {}
         if labor_account_allocated:
             for shared_code, shared_amount in labor_account_allocated.items():
                 shared_code_str = (shared_code or "").strip()
@@ -1580,11 +1613,13 @@ def build_project_lifecycle_cost(
                 )
                 account_entry["shared_expense_supply"] += shared_amount_value
                 account_entry["expense_supply"] += shared_amount_value
-                account_entry["allocation_source_amount"] = float(monthly_shared.get("labor_source_total") or 0.0)
+                account_entry["allocation_source_amount"] = float(
+                    sum(float(row.get("source_amount") or 0.0) for row in (labor_account_allocation_details.get(shared_code_str) or []))
+                )
                 account_entry["allocation_project_basis_amount"] = float(monthly_shared.get("labor_project_basis_total") or 0.0)
                 account_entry["allocation_total_basis_amount"] = float(monthly_shared.get("labor_overall_basis_total") or 0.0)
                 account_entry["allocation_mode"] = common_allocation_mode
-                account_entry["allocation_details"] = list(monthly_shared.get("labor_allocation_details") or [])
+                account_entry["allocation_details"] = list(labor_account_allocation_details.get(shared_code_str) or [])
         else:
             account_entry = breakdown_account_maps["인건비"].setdefault(
                 "SHARED_LABOR",
@@ -1631,6 +1666,7 @@ def build_project_lifecycle_cost(
         project_entry["shared_expense_supply"] += common_shared
         project_entry["expense_supply"] += common_shared
         common_account_allocated = monthly_shared.get("common_account_allocated") or {}
+        common_account_allocation_details = monthly_shared.get("common_account_allocation_details") or {}
         if common_account_allocated:
             for shared_code, shared_amount in common_account_allocated.items():
                 shared_code_str = (shared_code or "").strip()
@@ -1655,11 +1691,13 @@ def build_project_lifecycle_cost(
                 )
                 account_entry["shared_expense_supply"] += shared_amount_value
                 account_entry["expense_supply"] += shared_amount_value
-                account_entry["allocation_source_amount"] = float(monthly_shared.get("common_source_total") or 0.0)
+                account_entry["allocation_source_amount"] = float(
+                    sum(float(row.get("source_amount") or 0.0) for row in (common_account_allocation_details.get(shared_code_str) or []))
+                )
                 account_entry["allocation_project_basis_amount"] = float(monthly_shared.get("common_project_basis_total") or 0.0)
                 account_entry["allocation_total_basis_amount"] = float(monthly_shared.get("common_overall_basis_total") or 0.0)
                 account_entry["allocation_mode"] = common_allocation_mode
-                account_entry["allocation_details"] = list(monthly_shared.get("common_allocation_details") or [])
+                account_entry["allocation_details"] = list(common_account_allocation_details.get(shared_code_str) or [])
         else:
             account_entry = breakdown_account_maps["관리비"].setdefault(
                 "SHARED_COMMON",
@@ -1886,6 +1924,17 @@ def build_lifecycle_account_detail(
             allocation_project_basis_amount = float(monthly_shared.get("common_project_basis_total") or 0.0)
             allocation_total_basis_amount = float(monthly_shared.get("common_overall_basis_total") or 0.0)
             allocation_details = list(monthly_shared.get("common_allocation_details") or [])
+    else:
+        allocation_mode = fetch_lifecycle_common_allocation_mode(conn, base_project_code)
+        monthly_shared = calculate_monthly_shared_distribution(conn, base_project_code, allocation_mode)
+        labor_detail_map = monthly_shared.get("labor_account_allocation_details") or {}
+        common_detail_map = monthly_shared.get("common_account_allocation_details") or {}
+        account_rows = labor_detail_map.get(account_code) or common_detail_map.get(account_code) or []
+        if account_rows:
+            allocation_details = list(account_rows)
+            allocation_source_amount = float(sum(float(row.get("source_amount") or 0.0) for row in account_rows))
+            allocation_project_basis_amount = float(sum(float(row.get("project_basis_amount") or 0.0) for row in account_rows))
+            allocation_total_basis_amount = float(sum(float(row.get("total_basis_amount") or 0.0) for row in account_rows))
 
     return {
         "summary": summary,