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Recent Accounting Pronouncements
 12 Months Ended
Dec. 31, 2020
Accounting Standards Update and Change in Accounting Principle [Abstract]  
Recent Accounting Pronouncements Recent Accounting Pronouncements
Recently Issued Accounting Pronouncements
We are currently evaluating the impact of certain ASUs on our Consolidated Financial Statements or Notes to Consolidated Financial Statements, which are described below:
StandardDescriptionEffective DateEffect on the financial statements or other significant matters
ASU 2020-04,
Reference Rate Reform
(Topic 848):
Facilitation of the
Effects of Reference
Rate Reform on
Financial Statement
This pronouncement provides
temporary optional expedients
and exceptions for applying
GAAP principles to contract
modifications and hedging
relationships to ease the financial
reporting burdens of the expected
market transition from LIBOR
and other interbank offered rates
to alternative reference rates.		Upon issuance on
March 12, 2020, and
will apply though
December 31, 2022.		We continue to evaluate the temporary expedients and options available under this guidance, and the effects of these pronouncements on our Consolidated Financial Statements and Notes to Consolidated Financial Statements. We are currently identifying and evaluating contracts that may be impacted. As of December 31, 2020, we have not applied any expedients and options available under this ASU.
ASU 2021-01, Reference Rate Reform (Topic 848): Scope
StandardDescriptionEffective DateEffect on the financial statements or other significant matters
ASU 2020-06, Debt with Conversion and Other Options (Subtopic 470-20) and Derivative and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity's Own Equity
This pronouncement simplifies
the accounting for certain
financial instruments with
characteristics of liabilities and
equity, including convertible
instruments and contracts on an
entity's own equity. Specifically,
the ASU "simplifies accounting
for convertible instruments by
removing major separation
models required under current
GAAP." In addition, the ASU
"removes certain settlement
conditions that are required for
equity contracts to qualify for it"
and "simplifies the diluted
earnings per share (EPS)
calculations in certain areas."		Annual period
beginning after
December 15, 2021.
Early adoption is
permitted for annual
period beginning after
December 15, 2020.		This pronouncement does not impact any securities we currently have on our balance sheet. We will continue to
evaluate the effects of this pronouncement on our Consolidated Financial Statements and Notes to Consolidated Financial Statements as it pertains to any relevant future activity. We expect to adopt this ASU on its effective date.
Recently Adopted Accounting Pronouncements
StandardAdoption
ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments
In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments (ASC 326). ASC 326 revised the GAAP guidance on the impairment of most financial assets and certain other instruments that are not measured at fair value through net income. ASC 326 introduces the current expected credit loss (CECL) model that is based on expected losses for
instruments measured at amortized cost rather than incurred losses. It also requires entities to record an allowance for available-for-sale debt securities rather than impair the carrying amount of the
securities. Subsequent improvements to the estimated credit losses of available-for-sale debt securities will be recognized immediately in earnings, instead of over-time as they would under historic guidance. In 2019, the FASB issued ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivative and Hedging, and Topic 825, Financial Instruments. This pronouncement clarified and improved certain areas of guidance related to the recently issued standards on credit losses, hedging, and recognition and measurement.

We adopted ASC 326 effective January 1, 2020, using a modified retrospective method. Adoption of this standard did not have material impact on our Consolidated Financial Statements. No adjustments were made to the January 1, 2020 opening balances as a result of this adoption. As required under the modified retrospective method of adoption, results for the reporting periods beginning after January 1, 2020 are presented under ASC 326, while prior period amounts are not adjusted.

See Note 3, "Revenue Recognition," and Note 18, "Fair Value," for our discussion of the implementing these standards.
ASU 2016-13,  Financial Instruments-Credit Losses (Topic 326)
ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans
Issued in August 2018, the pronouncement modifies the disclosure requirements for defined benefit pension or other postretirement benefit plans. The guidance removes disclosures that are no longer considered cost beneficial, clarifies the specific requirements of disclosures and adds disclosure requirements identified as relevant. The modifications affect annual period disclosures for fiscal years ending after December 15, 2020, and are applied on a retrospective basis to all periods presented. These disclosure requirements are reflected in the Note 12, "Pension and Postretirement Benefits."
ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income TaxesThis pronouncement simplifies the accounting for income taxes by eliminating certain exceptions to the general principles in ASC 740, income taxes. It also improves consistency of application for other areas of the guidance by clarifying and amending existing guidance. We adopted the amendments of this pronouncement as of January 1, 2021 with no material impact to the Consolidated Financial Statements.