| Item | Type | Period | Balance | Description | | | | | |
| Condensed Financial Information Of Parent Company Only Disclosure Abstract | | | | |
| Condensed Financial Information of Parent Company Only Disclosure | | duration | | The entire disclosure for condensed financial information, including the financial position, cash flows, and the results of operations of the registrant (parent company) as of the same dates or for the same periods for which audited consolidated financial statements are being presented. Alternatively, the details of this disclosure can be reported by the specific parent company taxonomy elements, indicating the appropriate date and period contexts in an instance document. |
| Description Of Material Contingencies Of Parent Company | | | | |
| Description Of Significant Provisions Of Long Term Obligations Of Parent Company | | | | |
| Description Of Mandatory Dividend Or Redemption Provisions Of Redeemable Stock Of Parent Company | | | | |
| Description Of Guarantees Given By Parent Company | | | | |
| Other Parent Company Disclosures | text | | | Other registrant disclosures related to the condensed financial information of the parent company. May include disclosure of any change in accounting practice that affects comparability between periods. |
| Long-Term Debt, Fiscal Year Maturity | text | | | |
| Long-Term Debt, Maturity, Remainder of Fiscal Year | $ | instant | credit | Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in remainder of current fiscal year. |
| Long-Term Debt, Rolling Maturity | text | | | |
| SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Subsidiaries and Equity Method Investees | text | | | |
| Schedule Of Condensed Financial Statements Table Text Block | | | | |
| Schedule Of Condensed Balance Sheet Table Text Block | | | | |
| Schedule Of Condensed Income Statement Table Text Block | | | | |
| Condensed Statement Of Comprehensive Income Table Text Block | | | | |
| Schedule Of Condensed Cash Flow Statement Table Text Block | | | | |
| Long-Term Debt, Maturity, Year One | $ | instant | credit | Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
| Long-Term Debt, Maturity, Year Two | $ | instant | credit | Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
| Long-Term Debt, Maturity, Year Three | $ | instant | credit | Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
| Long-Term Debt, Maturity, Year Four | $ | instant | credit | Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
| Long-Term Debt, Maturity, Year Five | $ | instant | credit | Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
| Long-Term Debt, Maturity, after Year Five | $ | instant | credit | Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
| Long-Term Debt, Maturities, Repayments of Principal in Next Rolling 12 Months | $ | instant | credit | Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
| Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Two | $ | instant | credit | Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
| Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Three | $ | instant | credit | Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
| Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Four | $ | instant | credit | Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
| Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Five | $ | instant | credit | Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
| Long-Term Debt, Maturities, Repayments of Principal in Rolling after Year Five | $ | instant | credit | Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
| SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Consolidated Subsidiaries | $ | duration | debit | This element represents disclosure of the aggregate cash dividends paid to the entity by consolidated subsidiaries. |
| SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Unconsolidated Subsidiaries | $ | duration | debit | This element represents disclosure of the aggregate cash dividends paid to the entity by unconsolidated subsidiaries. |
| SEC Schedule, 12-04, Cash Dividends Paid to Registrant, 50 Percent or Less Owned Persons | $ | duration | debit | This element represents disclosure of the aggregate cash dividends paid to the entity by 50 percent or less owned persons accounted for using the equity method. |
| SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Subsidiaries and Equity Method Investees, Total | $ | duration | debit | This element represents disclosure of the total aggregate cash dividends paid to the entity by consolidated subsidiaries, by unconsolidated subsidiaries, and by 50 percent or less owned persons accounted for using the equity method. |
| Schedule Of Condensed Financial Statements Table | | | | |
| Condensed Balance Sheet Statement Table | | | | |
| Condensed Income Statement Table | | | | |
| Condensed Statement Of Comprehensive Income Table | | | | |
| Condensed Cash Flow Statement Table | | | | |