Summary of Significant Accounting Policies	6 Months Ended
Sep. 10, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 1—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Statement of Registrant The accompanying Condensed Consolidated Financial Statements of SUPERVALU INC. (the “Company”, “SUPERVALU”, “we”, “us” or “our”) for the second quarters and year-to-date periods ended September 10, 2016 and September 12, 2015 are unaudited and, in the opinion of management, contain all adjustments that are of a normal and recurring nature necessary to present fairly the financial condition, results of operations and cash flows for such periods. The Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and related notes in the Company’s Annual Report on Form 10-K for the fiscal year ended February 27, 2016. The results of operations for the second quarter and fiscal year-to-date ended September 10, 2016 are not necessarily indicative of the results expected for the full year. Accounting Policies The summary of significant accounting policies is included in the Notes to Consolidated Financial Statements set forth in the Company’s Annual Report on Form 10-K for the fiscal year ended February 27, 2016. Fiscal Year The Company operates on a 52/53 week fiscal year basis, with its fiscal year ending on the last Saturday in February. References to the second quarters of fiscal 2017 and 2016 relate to the 12 week fiscal quarters ended September 10, 2016 and September 12, 2015, respectively. References to fiscal 2017 and 2016 year-to-date relate to the 28 week fiscal periods ended September 10, 2016 and September 12, 2015, respectively. Use of Estimates The preparation of the Company’s Condensed Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Cash and Cash Equivalents The Company considers all highly liquid investments with a maturity of three months or less at the time of purchase to be cash equivalents. The Company’s banking arrangements allow the Company to fund outstanding checks when presented to the financial institution for payment. The Company funds all intraday bank balance overdrafts during the same business day. Checks outstanding in excess of bank balances create net book overdrafts, which are recorded in Accounts payable in the Condensed Consolidated Balance Sheets and are reflected as an operating activity in the Condensed Consolidated Statements of Cash Flows. As of September 10, 2016 and February 27, 2016, the Company had net book overdrafts of $132 and $131, respectively. Inventories, Net Inventories are valued at the lower of cost or market. Substantially all of the Company’s inventories consist of finished goods and a substantial portion of the Company’s inventories have a last-in, first-out (“LIFO”) reserve applied. Interim LIFO calculations are based on the Company’s estimates of expected year-end inventory levels and costs, as the actual valuation of inventory under the LIFO method is computed at the end of each year based on the inventory levels and costs at that time. If the first-in, first-out method had been used, Inventories, net would have been higher by approximately $217 at September 10, 2016 and $215 at February 27, 2016. The Company recorded a LIFO charge of $0 and $2 for the second quarters ended September 10, 2016 and September 12, 2015, respectively. The Company recorded a LIFO charge of $2 and $5 for fiscal 2017 and 2016 year-to-date, respectively. Recently Issued Accounting Standards In August 2016, the Financial Accounting Standards Board (“FASB”) issued authoritative guidance under Accounting Standard Update (“ASU”) 2016-15, Statement of Cash Flows (Topic 320): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 clarifies how certain cash receipts and payments should be presented in the statement of cash flows. The Company is required to adopt this new guidance in the first quarter of fiscal 2019. The Company is currently evaluating the potential impact of adoption of this standard on its consolidated financial statements. In June 2016, the FASB issued authoritative guidance under ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. ASU 2016-13 changes the impairment model for most financial assets and certain other instruments. For trade and other receivables, held-to-maturity debt securities, loans and other instruments, entities will be required to use a new forward-looking “expected loss” model that will replace today’s “incurred loss” model and generally will result in the earlier recognition of allowances for losses. For available-for-sale debt securities with unrealized losses, entities will measure credit losses in a manner similar to current practice, except that the losses will be recognized as an allowance. The Company is required to adopt this new guidance in the first quarter of fiscal 2021. The Company is currently evaluating the potential impact of adoption of this standard on its consolidated financial statements. In March 2016, the FASB issued authoritative guidance under ASU 2016-09, Compensation-Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 provides for simplification of several aspects of the accounting for share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. The Company is required to adopt this new guidance in the first quarter of fiscal 2018. The Company is currently evaluating the potential impact of adoption of this standard on its consolidated financial statements. In February 2016, the FASB issued authoritative guidance under ASU 2016-02, Leases (Topic 842). ASU 2016-02 provides new comprehensive lease accounting guidance that supersedes existing lease guidance. Upon adoption of ASU 2016-02, the Company will be required to recognize most leases on its balance sheet at the beginning of the earliest comparative period presented with a corresponding adjustment to stockholders' equity. ASU 2016-02 requires the Company to capitalize most current operating lease obligations as right-of-use assets based on the present value of future operating lease payments and to recognize a corresponding liability. Criteria for distinguishing leases between finance and operating are substantially similar to criteria for distinguishing between capital leases and operating leases in existing lease guidance. The Company is required to adopt this new guidance in the first quarter of fiscal 2020. The Company is currently evaluating the potential impact of adoption of this standard on its consolidated financial statements. In January 2016, the FASB issued authoritative guidance under ASU 2016-01, Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 revises the classification, measurement and disclosure of investments in equity securities. The Company is required to adopt this new guidance in the first quarter of fiscal 2019. The Company is currently evaluating the potential impact of adoption of this standard on its consolidated financial statements. In May 2014, the FASB issued authoritative guidance under ASU 2014-09, Revenue from Contracts with Customers (Topic 606): Revenue from Contracts with Customers. ASU 2014-09 supersedes existing revenue recognition requirements and provides a new comprehensive revenue recognition model that requires entities to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. The new guidance will likely be adopted by the Company during the first quarter of fiscal 2019, as permitted by ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date. The adoption will include updates as provided under ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net); ASU 2016-10, Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing; and ASU 2016-12, Revenue from Contracts with Customers: Narrow-Scope Improvements and Practical Expedients. Adoption is allowed by either the full retrospective or modified retrospective approach. The Company is currently evaluating which approach it will apply and the potential impact of the adoption on its consolidated financial statements.

NOTE 1—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Statement of Registrant

The accompanying Condensed Consolidated Financial Statements of SUPERVALU INC. (the “Company”, “SUPERVALU”, “we”, “us” or “our”) for the second quarters and year-to-date periods ended September 10, 2016 and September 12, 2015 are unaudited and, in the opinion of management, contain all adjustments that are of a normal and recurring nature necessary to present fairly the financial condition, results of operations and cash flows for such periods. The Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and related notes in the Company’s Annual Report on Form 10-K for the fiscal year ended February 27, 2016. The results of operations for the second quarter and fiscal year-to-date ended September 10, 2016 are not necessarily indicative of the results expected for the full year.

Accounting Policies

The summary of significant accounting policies is included in the Notes to Consolidated Financial Statements set forth in the Company’s Annual Report on Form 10-K for the fiscal year ended February 27, 2016.

Fiscal Year

The Company operates on a 52/53 week fiscal year basis, with its fiscal year ending on the last Saturday in February. References to the second quarters of fiscal 2017 and 2016 relate to the 12 week fiscal quarters ended September 10, 2016 and September 12, 2015, respectively. References to fiscal 2017 and 2016 year-to-date relate to the 28 week fiscal periods ended September 10, 2016 and September 12, 2015, respectively.

Use of Estimates

The preparation of the Company’s Condensed Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents

The Company considers all highly liquid investments with a maturity of three months or less at the time of purchase to be cash equivalents. The Company’s banking arrangements allow the Company to fund outstanding checks when presented to the financial institution for payment. The Company funds all intraday bank balance overdrafts during the same business day. Checks outstanding in excess of bank balances create net book overdrafts, which are recorded in Accounts payable in the Condensed Consolidated Balance Sheets and are reflected as an operating activity in the Condensed Consolidated Statements of Cash Flows. As of September 10, 2016 and February 27, 2016, the Company had net book overdrafts of $132 and $131, respectively.

Inventories, Net

Inventories are valued at the lower of cost or market. Substantially all of the Company’s inventories consist of finished goods and a substantial portion of the Company’s inventories have a last-in, first-out (“LIFO”) reserve applied. Interim LIFO calculations are based on the Company’s estimates of expected year-end inventory levels and costs, as the actual valuation of inventory under the LIFO method is computed at the end of each year based on the inventory levels and costs at that time. If the first-in, first-out method had been used, Inventories, net would have been higher by approximately $217 at September 10, 2016 and $215 at February 27, 2016. The Company recorded a LIFO charge of $0 and $2 for the second quarters ended September 10, 2016 and September 12, 2015, respectively. The Company recorded a LIFO charge of $2 and $5 for fiscal 2017 and 2016 year-to-date, respectively.

Recently Issued Accounting Standards

In August 2016, the Financial Accounting Standards Board (“FASB”) issued authoritative guidance under Accounting Standard Update (“ASU”) 2016-15, Statement of Cash Flows (Topic 320): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 clarifies how certain cash receipts and payments should be presented in the statement of cash flows. The Company is required to adopt this new guidance in the first quarter of fiscal 2019. The Company is currently evaluating the potential impact of adoption of this standard on its consolidated financial statements.

In June 2016, the FASB issued authoritative guidance under ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. ASU 2016-13 changes the impairment model for most financial assets and certain other instruments. For trade and other receivables, held-to-maturity debt securities, loans and other instruments, entities will be required to use a new forward-looking “expected loss” model that will replace today’s “incurred loss” model and generally will result in the earlier recognition of allowances for losses. For available-for-sale debt securities with unrealized losses, entities will measure credit losses in a manner similar to current practice, except that the losses will be recognized as an allowance. The Company is required to adopt this new guidance in the first quarter of fiscal 2021. The Company is currently evaluating the potential impact of adoption of this standard on its consolidated financial statements.

In March 2016, the FASB issued authoritative guidance under ASU 2016-09, Compensation-Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 provides for simplification of several aspects of the accounting for share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. The Company is required to adopt this new guidance in the first quarter of fiscal 2018. The Company is currently evaluating the potential impact of adoption of this standard on its consolidated financial statements.

In February 2016, the FASB issued authoritative guidance under ASU 2016-02, Leases (Topic 842). ASU 2016-02 provides new comprehensive lease accounting guidance that supersedes existing lease guidance. Upon adoption of ASU 2016-02, the Company will be required to recognize most leases on its balance sheet at the beginning of the earliest comparative period presented with a corresponding adjustment to stockholders' equity. ASU 2016-02 requires the Company to capitalize most current operating lease obligations as right-of-use assets based on the present value of future operating lease payments and to recognize a corresponding liability. Criteria for distinguishing leases between finance and operating are substantially similar to criteria for distinguishing between capital leases and operating leases in existing lease guidance. The Company is required to adopt this new guidance in the first quarter of fiscal 2020. The Company is currently evaluating the potential impact of adoption of this standard on its consolidated financial statements.

In January 2016, the FASB issued authoritative guidance under ASU 2016-01, Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 revises the classification, measurement and disclosure of investments in equity securities. The Company is required to adopt this new guidance in the first quarter of fiscal 2019. The Company is currently evaluating the potential impact of adoption of this standard on its consolidated financial statements.

In May 2014, the FASB issued authoritative guidance under ASU 2014-09, Revenue from Contracts with Customers (Topic 606): Revenue from Contracts with Customers. ASU 2014-09 supersedes existing revenue recognition requirements and provides a new comprehensive revenue recognition model that requires entities to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. The new guidance will likely be adopted by the Company during the first quarter of fiscal 2019, as permitted by ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date. The adoption will include updates as provided under ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net); ASU 2016-10, Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing; and ASU 2016-12, Revenue from Contracts with Customers: Narrow-Scope Improvements and Practical Expedients. Adoption is allowed by either the full retrospective or modified retrospective approach. The Company is currently evaluating which approach it will apply and the potential impact of the adoption on its consolidated financial statements.