group For purposes of this paragraph, the term worldwide affiliated group means group consisting of— (i) the includible members of an affiliated group (as defined in section 1504(a), determined without regard to paragraph (2) of section 1504(b)), and (ii) all controlled foreign corporations in which such members in the aggregate meet the ownership requirements of section 1504(a)(2) either directly or indirectly through applying paragraph (2) of section 958(a) or through applying rules similar to the rules of such paragraph to stock owned directly or indirectly by domestic partnerships, trusts, or estates. (6) Commodities used in normal course of trade or business For purposes of this subchapter, the term derivative shall not include any contract with respect to any commodity if— (A) such contract requires physical delivery with the option of cash settlement only in unusual and exceptional circumstances, and (B) such commodity is used (and is used in quantities with respect to which such derivative relates) in the normal course of the taxpayer’s trade or business (or, in the case of an individual, for personal consumption). (c) Contracts with embedded derivative components (1) In general If a contract has derivative and nonderivative components, then each derivative component shall be treated as a derivative for purposes of this subchapter. If the derivative component cannot be separately valued, then the entire contract shall be treated as a derivative for purposes of this subchapter. (2) Exception for certain embedded derivative components of debt instruments A debt instrument shall not be treated as having a derivative component merely because— (A) such debt instrument is denominated in a nonfunctional currency (as defined in section 988(c)(1)(C)(ii)), or (B) payments with respect to such debt instrument are determined by reference to the value of a nonfunctional currency (as so defined). (d) Treatment of American Depository Receipts and similar instruments Except as otherwise provided by the Secretary, for