Employee Benefit Plans - Narrative (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) plan	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined contribution plan, employer matching contribution per dollar	$ 1.00
Defined contribution plan, employer matching contribution	5.00%
Defined contribution plan, employers matching contribution for vesting plan	4.00%
Defined contribution plan, employers matching contribution for vesting, period	3 years
Defined contribution plans, cost	$ 212,000,000	$ 194,000,000
Number of non-qualified defined contribution plans | plan	2
Defined contribution plan, assets and liabilities	$ 256,000,000	322,000,000
Pension plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension assets or obligations, threshold, per plan	20,000,000
Accumulated postretirement benefit obligation	2,634,000,000	3,550,000,000	$ 3,806,000,000
Fair values of the plan assets	2,266,000,000	3,147,000,000	$ 3,202,000,000
Payment for settlement	24,000,000	33,000,000
Employer contributions	$ 32,000,000	28,000,000
Pension plan | Funded plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of retirement plans | plan	7
Pension plan | Underfunded plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of retirement plans | plan	5
Pension plan | Minimum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Estimated future employer contributions in next fiscal year	$ 15,000,000
Pension plan | Maximum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Estimated future employer contributions in next fiscal year	20,000,000
Pension plan | Fixed income and cash investment funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair values of the plan assets	1,482,000,000	1,890,000,000
Pension plan | Fair value measured at Net Asset Value per share
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair values of the plan assets	$ 2,157,000,000	$ 3,028,000,000
Pension plan | Fair value measured at Net Asset Value per share | Equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Percent of plan assets valued using NAV	13.00%	16.00%
Pension plan | Fair value measured at Net Asset Value per share | Fixed income and cash investment funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Percent of plan assets valued using NAV	69.00%	62.00%
Pension plan | Fair value measured at Net Asset Value per share | Alternative investments
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Percent of plan assets valued using NAV	18.00%	22.00%
Pension plan | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair values of the plan assets	$ 109,000,000	$ 119,000,000
Pension plan | Level 3
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair values of the plan assets	$ 100,000,000	112,000,000
Pension plan | UNITED STATES
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of retirement plans | plan	4
Payment for settlement	$ 286,000,000
Pension plan | Foreign
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of retirement plans | plan	8
Postretirement Health Care Benefits | UNITED STATES
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accumulated postretirement benefit obligation	$ 37,000,000	50,000,000
Supplemental Pension Plan | UNITED STATES | Nonqualified Plan | BH SPP
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Trust assets	$ 34,000,000	$ 45,000,000