Shareholder Report, Average Annual Return (Details)
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6 Months Ended |
12 Months Ended |
39 Months Ended |
60 Months Ended |
120 Months Ended |
Feb. 28, 2025 |
Feb. 28, 2025 |
Feb. 28, 2025 |
Feb. 28, 2025 |
Feb. 28, 2025 |
| C000029018 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Advisor Class
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| C000029015 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class A (with sales charges)
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| Average Annual Return, Percent |
(2.51%)
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5.35%
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3.34%
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3.31%
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| C000029017 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class C (with sales charges)
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| Average Annual Return, Percent |
0.46%
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8.18%
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3.45%
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2.98%
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| C000029021 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class I
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| C000029007 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Advisor Class
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| C000029004 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class A (with sales charges)
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| Average Annual Return, Percent |
(8.49%)
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(1.84%)
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1.58%
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2.13%
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| C000029006 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class C (with sales charges)
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| Average Annual Return, Percent |
(5.63%)
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0.78%
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1.69%
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1.80%
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| C000029010 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class I
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| C000232929 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class Z
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| C000029036 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Advisor Class
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| C000029033 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class A (with sales charges)
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| Average Annual Return, Percent |
(1.19%)
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8.46%
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11.12%
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7.82%
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| C000029035 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class C (with sales charges)
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| Average Annual Return, Percent |
1.75%
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11.40%
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11.22%
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7.47%
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| C000029029 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Advisor Class
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| C000029026 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class A (with sales charges)
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| Average Annual Return, Percent |
(0.87%)
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8.99%
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11.46%
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7.86%
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| C000029028 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class C (with sales charges)
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| Average Annual Return, Percent |
2.16%
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11.97%
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11.58%
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7.52%
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| Without Sales Load [Member] | C000029018 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.99%
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10.32%
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4.50%
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4.03%
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| Without Sales Load [Member] | C000029015 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.82%
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10.04%
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4.24%
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3.76%
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| Without Sales Load [Member] | C000029017 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.45%
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9.18%
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3.45%
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2.98%
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| Without Sales Load [Member] | C000029021 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.94%
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10.32%
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4.64%
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4.08%
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| Without Sales Load [Member] | C000029007 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
(4.17%)
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2.87%
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2.74%
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2.85%
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| Without Sales Load [Member] | C000029004 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
(4.39%)
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2.54%
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2.46%
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2.57%
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| Without Sales Load [Member] | C000029006 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
(4.68%)
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1.78%
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1.69%
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1.80%
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| Without Sales Load [Member] | C000029010 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
(4.20%)
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2.83%
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2.75%
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2.83%
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| Without Sales Load [Member] | C000232929 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
(4.28%)
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2.80%
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(0.37%)
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| Without Sales Load [Member] | C000029036 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
3.27%
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13.55%
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12.35%
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8.56%
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| Without Sales Load [Member] | C000029033 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
3.18%
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13.30%
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12.08%
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8.29%
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| Without Sales Load [Member] | C000029035 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
2.75%
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12.40%
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11.22%
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7.47%
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| Without Sales Load [Member] | C000029029 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
3.70%
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14.16%
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12.72%
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8.61%
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| Without Sales Load [Member] | C000029026 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
3.52%
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13.81%
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12.44%
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8.33%
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| Without Sales Load [Member] | C000029028 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
3.15%
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12.97%
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11.58%
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7.52%
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| AllianceBernstein Index: MSCI ACWI Index (net) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index (net)
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| Average Annual Return, Percent |
4.08%
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15.06%
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12.79%
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9.11%
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| AllianceBernstein Index: MSCI ACWI Index (net) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index (net)
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| Average Annual Return, Percent |
4.08%
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15.06%
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12.79%
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9.11%
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| AllianceBernstein Index: MSCI ACWI Index (net) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index (net)
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| Average Annual Return, Percent |
4.08%
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15.06%
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12.79%
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9.11%
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| AllianceBernstein Index: MSCI ACWI Index (net) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index (net)
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| Average Annual Return, Percent |
4.08%
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15.06%
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12.79%
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9.11%
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| AllianceBernstein Index: S&P 500 Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
S&P 500 Index
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| Average Annual Return, Percent |
6.11%
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18.41%
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16.85%
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12.98%
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| AllianceBernstein Index: S&P 500 Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
S&P 500 Index
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| Average Annual Return, Percent |
6.11%
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18.41%
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16.85%
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12.98%
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| AllianceBernstein Index: S&P 500 Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
S&P 500 Index
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| Average Annual Return, Percent |
6.11%
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18.41%
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16.85%
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12.98%
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| AllianceBernstein Index: S&P 500 Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
S&P 500 Index
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| Average Annual Return, Percent |
6.11%
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18.41%
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16.85%
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12.98%
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| AllianceBernstein Index: S&P 500 Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
S&P 500 Index
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| Average Annual Return, Percent |
6.11%
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18.41%
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9.79%
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| AllianceBernstein Index: MSCI ACWI Index (net) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index (net)
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| Average Annual Return, Percent |
4.08%
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15.06%
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12.79%
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9.11%
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| AllianceBernstein Index: MSCI ACWI Index (net) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index (net)
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| Average Annual Return, Percent |
4.08%
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15.06%
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12.79%
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9.11%
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| AllianceBernstein Index: MSCI ACWI Index (net) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index (net)
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| Average Annual Return, Percent |
4.08%
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15.06%
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12.79%
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9.11%
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| AllianceBernstein Index: MSCI ACWI Index (net) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index (net)
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| Average Annual Return, Percent |
4.08%
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15.06%
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12.79%
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9.11%
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| AllianceBernstein Index: MSCI ACWI Index (net) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index (net)
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| Average Annual Return, Percent |
4.08%
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15.06%
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12.79%
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9.11%
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| AllianceBernstein Index: MSCI ACWI Index (net) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index (net)
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| Average Annual Return, Percent |
4.08%
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15.06%
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12.79%
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9.11%
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| AllianceBernstein Index: Bloomberg Global Aggregate Bond Index (USD hedged) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Bloomberg Global Aggregate Bond Index (USD hedged)
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| Average Annual Return, Percent |
1.80%
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5.98%
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0.19%
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2.04%
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| AllianceBernstein Index: Bloomberg Global Aggregate Bond Index (USD hedged) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Bloomberg Global Aggregate Bond Index (USD hedged)
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| Average Annual Return, Percent |
1.80%
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5.98%
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0.19%
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2.04%
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| AllianceBernstein Index: Bloomberg Global Aggregate Bond Index (USD hedged) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Bloomberg Global Aggregate Bond Index (USD hedged)
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| Average Annual Return, Percent |
1.80%
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5.98%
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0.19%
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2.04%
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| AllianceBernstein Index: Bloomberg Global Aggregate Bond Index (USD hedged) |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Bloomberg Global Aggregate Bond Index (USD hedged)
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| Average Annual Return, Percent |
1.80%
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5.98%
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0.19%
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2.04%
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| Alliance Bernstein Index: 60% S&P 500 Index / 40% Bloomberg US Government/Credit Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
60% S&P 500 Index / 40% Bloomberg US Government/Credit Index
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| Average Annual Return, Percent |
4.03%
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13.17%
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9.85%
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8.56%
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| Alliance Bernstein Index: 60% S&P 500 Index / 40% Bloomberg US Government/Credit Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
60% S&P 500 Index / 40% Bloomberg US Government/Credit Index
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| Average Annual Return, Percent |
4.03%
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13.17%
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9.85%
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8.56%
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| Alliance Bernstein Index: 60% S&P 500 Index / 40% Bloomberg US Government/Credit Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
60% S&P 500 Index / 40% Bloomberg US Government/Credit Index
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| Average Annual Return, Percent |
4.03%
|
13.17%
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9.85%
|
8.56%
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| Alliance Bernstein Index: 60% S&P 500 Index / 40% Bloomberg US Government/Credit Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
60% S&P 500 Index / 40% Bloomberg US Government/Credit Index
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| Average Annual Return, Percent |
4.03%
|
13.17%
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|
9.85%
|
8.56%
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| Alliance Bernstein Index: 60% S&P 500 Index / 40% Bloomberg US Government/Credit Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
60% S&P 500 Index / 40% Bloomberg US Government/Credit Index
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| Average Annual Return, Percent |
4.03%
|
13.17%
|
5.28%
|
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