Share-Based Compensation Arrangement, Performance Shares, Payout Determination, Share Price Trading Day Duration

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- Definition

Share-Based Compensation Arrangement, Performance Shares, Performance Period

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- Definition

Share-Based Compensation Arrangement, Performance Shares, Vesting Percentage, Banking Feature Lock Threshold Percentage

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate dividends paid during the period for each share of common stock outstanding.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of tax benefit from exercise of option under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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Number of shares authorized for issuance under share-based payment arrangement.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Percentage of vesting of award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Incentive Based Compensation - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	27,900,000
Performance shares, payout determination, share price trading day duration	30 days
Performance period	2 years
Dividends paid (in dollars per share)	$ 0.18	$ 0.08	$ 0.20
Allocated stock-based compensation expense	$ 43,000,000	$ 55,000,000	$ 60,000,000
Proceeds from stock options exercised	5,000,000	1,000,000	1,000,000
Tax benefit realized from exercise of stock options	0	0	0
Unrecognized compensation costs	$ 1,000,000
Share-based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage, banking feature lock threshold percentage	50.00%
Share-based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage, banking feature lock threshold percentage	100.00%
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Maximum term	10 years
Stock options exercised, intrinsic value	$ 3,000,000
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards other than options, outstanding (in shares)	0
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	2,306,696
Granted (in dollars per share)	$ 11.21
Unrecognized compensation costs	$ 28,000,000
Unrecognized compensation costs, period for recognition	1 year
Vested in period, total fair value	$ 39,000,000	$ 49,000,000	$ 48,000,000
Weighted average grant date fair value (in dollars per share)	$ 10.98	$ 11.72	$ 15.88
Restricted Stock \| Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Restricted Stock \| Non Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value (in dollars per share)	$ 18.07	$ 10.55	$ 20.66
Performance Shares \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	0.00%
Performance Shares \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	200.00%
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year	3 years
Restricted Stock Units (RSUs) \| Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Restricted Stock Units (RSUs) \| Non Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Performance Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards other than options, outstanding (in shares)	1,622,994
Allocated stock-based compensation expense	$ 11,000,000	$ 5,000,000	$ 7,000,000
Performance Unit \| Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	307,473	1,038,676	656,636
Performance Unit - Share Settlement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	307,473
Granted (in dollars per share)	$ 18.07
Performance Unit - Share Settlement \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	0.00%
Performance Unit - Share Settlement \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	200.00%
Performance Unit - Cash Settlement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards other than options, outstanding (in shares)	307,473
Grants in period (in shares)	307,473
Granted (in dollars per share)	$ 15.55