Debt and Equity Transactions (Unaudited)	6 Months Ended
Jun. 30, 2015
Debt and Equity Transactions [Abstract]
Debt and Equity Transactions	DEBT AND EQUITY TRANSACTIONS Debt Transactions. At June 30, 2015, FCX had $20.9 billion in debt, which included additions for unamortized fair value adjustments of $225 million (primarily from the oil and gas acquisitions in 2013), and is net of reductions attributable to unamortized net discounts of $21 million and unamortized debt issuance costs of $116 million. Refer to Note 12 for discussion of a change in the presentation of debt issuance costs. In February 2015, FCX's unsecured revolving credit facility and $4.0 billion bank term loan (Term Loan) were modified to amend the maximum total leverage ratio. In addition, the Term Loan amortization schedule was extended such that, as amended, the Term Loan’s scheduled payments total $205 million in 2016, $272 million in 2017, $1.0 billion in 2018, $313 million in 2019 and $1.3 billion in 2020, compared with the previous amortization schedule of $650 million in 2016, $200 million in 2017 and $2.2 billion in 2018. At June 30, 2015, $985 million was outstanding and $42 million of letters of credit were issued under FCX's revolving credit facility, resulting in availability of approximately $3.0 billion, of which approximately $1.5 billion could be used for additional letters of credit. At June 30, 2015, $1.3 billion was outstanding and no letters of credit were issued under Sociedad Minera Cerro Verde S.A.A.'s (Cerro Verde, FCX's mining subsidiary in Peru) credit facility, resulting in availability of $531 million. Cerro Verde's five-year, $1.8 billion senior unsecured credit facility is nonrecourse to FCX and the other shareholders of Cerro Verde. In April 2014, FCX redeemed $210 million of the aggregate principal amount of FCX Oil & Gas Inc.'s (FM O&G, FCX's oil and gas subsidiary) outstanding 6.625% Senior Notes due 2021. In accordance with the terms of the senior notes, the redemption was funded with cash contributions to FM O&G by FCX in exchange for additional equity, which is eliminated in the consolidated financial statements. Holders of these senior notes received the principal amount together with the redemption premium and accrued and unpaid interest to the redemption date. As a result of the redemption, FCX recorded a gain on early extinguishment of debt of $6 million in second-quarter 2014. Consolidated interest expense (excluding capitalized interest) totaled $215 million in second-quarter 2015, $225 million in second-quarter 2014, $425 million for the first six months of 2015 and $449 million for the first six months of 2014. Capitalized interest added to property, plant, equipment and mining development costs, net, totaled $47 million in second-quarter 2015, $39 million in second-quarter 2014, $92 million for the first six months of 2015 and $79 million for the first six months of 2014. Capitalized interest added to oil and gas properties not subject to amortization totaled $19 million in second-quarter 2015, $22 million in second-quarter 2014, $38 million for the first six months of 2015 and $45 million for the first six months of 2014. Equity Transactions. On June 24, 2015, FCX's Board of Directors (the Board) declared a dividend of $0.1605 per share, which was paid on August 3, 2015, to common shareholders of record at the close of business on July 15, 2015. This common stock dividend consisted of $0.05 per share for FCX's regular quarterly dividend and $0.1105 per share as a one-time special dividend related to the settlement of the shareholder derivative litigation (refer to Note 9 for further discussion).

DEBT AND EQUITY TRANSACTIONS

Debt Transactions. At June 30, 2015, FCX had $20.9 billion in debt, which included additions for unamortized fair value adjustments of $225 million (primarily from the oil and gas acquisitions in 2013), and is net of reductions attributable to unamortized net discounts of $21 million and unamortized debt issuance costs of $116 million. Refer to Note 12 for discussion of a change in the presentation of debt issuance costs.

In February 2015, FCX's unsecured revolving credit facility and $4.0 billion bank term loan (Term Loan) were modified to amend the maximum total leverage ratio. In addition, the Term Loan amortization schedule was extended such that, as amended, the Term Loan’s scheduled payments total $205 million in 2016, $272 million in 2017, $1.0 billion in 2018, $313 million in 2019 and $1.3 billion in 2020, compared with the previous amortization schedule of $650 million in 2016, $200 million in 2017 and $2.2 billion in 2018.

At June 30, 2015, $985 million was outstanding and $42 million of letters of credit were issued under FCX's revolving credit facility, resulting in availability of approximately $3.0 billion, of which approximately $1.5 billion could be used for additional letters of credit.

At June 30, 2015, $1.3 billion was outstanding and no letters of credit were issued under Sociedad Minera Cerro Verde S.A.A.'s (Cerro Verde, FCX's mining subsidiary in Peru) credit facility, resulting in availability of $531 million. Cerro Verde's five-year, $1.8 billion senior unsecured credit facility is nonrecourse to FCX and the other shareholders of Cerro Verde.

In April 2014, FCX redeemed $210 million of the aggregate principal amount of FCX Oil & Gas Inc.'s (FM O&G, FCX's oil and gas subsidiary) outstanding 6.625% Senior Notes due 2021. In accordance with the terms of the senior notes, the redemption was funded with cash contributions to FM O&G by FCX in exchange for additional equity, which is eliminated in the consolidated financial statements. Holders of these senior notes received the principal amount together with the redemption premium and accrued and unpaid interest to the redemption date. As a result of the redemption, FCX recorded a gain on early extinguishment of debt of $6 million in second-quarter 2014.

Consolidated interest expense (excluding capitalized interest) totaled $215 million in second-quarter 2015, $225 million in second-quarter 2014, $425 million for the first six months of 2015 and $449 million for the first six months of 2014. Capitalized interest added to property, plant, equipment and mining development costs, net, totaled $47 million in second-quarter 2015, $39 million in second-quarter 2014, $92 million for the first six months of 2015 and $79 million for the first six months of 2014. Capitalized interest added to oil and gas properties not subject to amortization totaled $19 million in second-quarter 2015, $22 million in second-quarter 2014, $38 million for the first six months of 2015 and $45 million for the first six months of 2014.

Equity Transactions. On June 24, 2015, FCX's Board of Directors (the Board) declared a dividend of $0.1605 per share, which was paid on August 3, 2015, to common shareholders of record at the close of business on July 15, 2015. This common stock dividend consisted of $0.05 per share for FCX's regular quarterly dividend and $0.1105 per share as a one-time special dividend related to the settlement of the shareholder derivative litigation (refer to Note 9 for further discussion).