Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Substantially all of the Company’s operations are held through its majority investment in GPIP, a subsidiary that is classified as a partnership for U.S. income tax purposes and is generally not subject to domestic income tax expense. As a result, the consolidated financial statements exclude the domestic tax effect of the earnings attributable to the noncontrolling partner’s interest in GPIP. During the nine months ended September 30, 2020 and 2019, the Company recognized Income Tax Expense of $21.2 million and $60.9 million, respectively, on Income before Income Taxes and Equity Income of Unconsolidated Entity of $146.7 million and $294.6 million, respectively. The effective tax rate for the nine months ended September 30, 2020 and 2019 is lower than the statutory rate primarily due to the tax effect of income attributable to noncontrolling interests as well as the mix and levels of earnings between foreign and domestic tax jurisdictions. In addition, during the nine months ended September 30, 2020, the Company recorded discrete benefits of $7.6 million and $4.1 million related to the release of valuation allowances against the net deferred tax assets of two of its wholly owned subsidiaries in Canada as a result of tax planning and the tax effect of tax credit and other provision to return adjustments related to the 2019 U.S. federal income tax return, respectively. As of December 31, 2019, the Company had approximately $34.5 million of Net Operating Losses (“NOLs”) for U.S. federal income tax purposes which may be used to offset future taxable income. Based on these NOLs, other tax attributes, tax benefits associated with planned capital projects, and the anticipated reduction in IP's investment in GPIP, the Company does not expect to be a meaningful U.S. federal cash taxpayer until 2024.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.