Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The following fair value hierarchy table presents information about the Company's financial assets and liabilities measured at fair value on a recurring basis:

(In millions)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at December 31, 2021
Assets
Deferred compensation plan	$	47	$	—	$	—	$	47
Derivative instruments	—		—		27		27
Total assets	$	47	$	—	$	27	$	74
Liabilities
Deferred compensation plan	$	56	$	—	$	—	$	56
Derivative instruments	—		—		179		179
Total liabilities	$	56	$	—	$	179	$	235

(In millions)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at December 31, 2020
Assets
Deferred compensation plan	$	22	$	—	$	—	$	22
Derivative instruments	—		2		24		26
Total assets	$	22	$	2	$	24	$	48
Liabilities
Deferred compensation plan	$	31	$	—	$	—	$	31
Derivative instruments	—		—		—		—
Total liabilities	$	31	$	—	$	—	$	31

Reconciliation of Changes in Fair Value of Financial Assets and Liabilities Classified as Level 3

The following table sets forth a reconciliation of changes in the fair value of financial assets and liabilities classified as Level 3 in the fair value hierarchy:

	Year Ended December 31,
(In millions)	2021		2020		2019
Balance at beginning of period	$	24	$	—	$	22
Total gain (loss) included in earnings	(532)		41		25
Settlement (gain) loss	356		(17)		(47)
Transfers in and/or out of Level 3	—		—		—
Balance at end of period	$	(152)	$	24	$	—
Change in unrealized gains (losses) relating to assets and liabilities still held at the end of the period	$	(154)	$	24	$	—

Carrying Amount and Fair Value of Debt

The carrying amount and fair value of debt is as follows:

	December 31, 2021				December 31, 2020
(In millions)	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Long-term debt	$	3,125	$	3,163	$	1,134	$	1,214
Current maturities	—		—		(188)		(189)
Long-term debt, excluding current maturities	$	3,125	$	3,163	$	946	$	1,025