Defined Benefit Plan, Plan Assets, Target Allocation, Number Of Investment Pools

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- Definition

Defined Contribution Plan, Employer Matching Contribution, Percent Of Additional Match

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- Definition

Defined Contribution Plan, Maximum Additional Annual Contributions Per Employee, Percent

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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- Definition

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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- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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- Definition

Amount of cost for defined contribution plan.

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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Employee Benefit Plans - Narrative (Details)		12 Months Ended
Employee Benefit Plans - Narrative (Details)	Jan. 01, 2022	Dec. 31, 2022 USD ($) investment_pool	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Employer contribution (as percent)	100.00%	100.00%
Employee contribution (as percent)	1.00%	1.00%
Employer contribution (as percent)	50.00%	25.00%
Employer contribution (as percent)	4.00%	4.00%
Contributions to defined contribution plans		$ 79,000,000	$ 58,000,000	$ 38,000,000
U.K. Plan
Defined Benefit Plan Disclosure [Line Items]
Number of plan asset investment pools \| investment_pool		2
Plan assets investments		$ 570,000,000	983,000,000	974,000,000
U.K. Plan \| Off-risk assets
Defined Benefit Plan Disclosure [Line Items]
Plan assets target allocation percentage		80.00%
U.K. Plan \| On-risk assets
Defined Benefit Plan Disclosure [Line Items]
Plan assets target allocation percentage		20.00%
U.S. Plan \| Off-risk assets
Defined Benefit Plan Disclosure [Line Items]
Plan assets target allocation percentage		61.00%
U.S. Plan \| On-risk assets
Defined Benefit Plan Disclosure [Line Items]
Plan assets target allocation percentage		39.00%
U.S. and Other Plans
Defined Benefit Plan Disclosure [Line Items]
Company contribution		$ 0	0
Plan assets investments		130,000,000	183,000,000	$ 181,000,000
Fair Value Measured at Net Asset Value Per Share \| Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets investments		$ 118,000,000	$ 158,000,000