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Employee Benefit Plans - Defined Benefit Plan, Information about Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	$ 3,573	$ 3,524
Defined Benefit Plan, Fair Value of Plan Assets, Excluded Investment Payables	49	46
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	3,573	3,524
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	3,396	3,573
Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	198
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	198
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	186	198
Pension Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	2,313
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	2,313
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	2,209	2,313
Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	190	198
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	190	198
Realized gains, net	0	(3)
Changes in unrealized gains (losses), net	0	9
Purchases	5	13
Sales	(21)	(30)
Transfers into Level 3 [2]	0	5
Transfers out of Level 3 [2]	0	(2)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	174	190
Pension Plan [Member] | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	3,527
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	3,527
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	3,347	3,527
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	18	30
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	18	30
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	8	18
Other Postretirement Benefits Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	16
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	16
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	8	16
Other Postretirement Benefits Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	2
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	2
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	2
Other Postretirement Benefits Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 0	$ 0
Equity Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	19.00%
Fixed income securities | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	81.00%
Fixed income securities | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	100.00%	100.00%
Short-term Investments [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	$ 187
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	187
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	164	$ 187
Short-term Investments [Member] | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	187
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	187
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	164	187
Short-term Investments [Member] | Pension Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Short-term Investments [Member] | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Short-term Investments [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	16
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	16
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	8	16
Short-term Investments [Member] | Other Postretirement Benefits Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	16
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	16
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	8	16
Short-term Investments [Member] | Other Postretirement Benefits Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Short-term Investments [Member] | Other Postretirement Benefits Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Corporate | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	1,679
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	1,679
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	1,619	1,679
Corporate | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Corporate | Pension Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	1,643
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	1,643
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	1,586	1,643
Corporate | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	36	31
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	36	31
Realized gains, net	0	0
Changes in unrealized gains (losses), net	0	2
Purchases	5	0
Sales	(8)	0
Transfers into Level 3 [2]	0	5
Transfers out of Level 3 [2]	0	(2)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	33	36
Residential mortgage-backed securities ("RMBS") | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	111
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	111
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	105	111
Residential mortgage-backed securities ("RMBS") | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Residential mortgage-backed securities ("RMBS") | Pension Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	111
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	111
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	105	111
Residential mortgage-backed securities ("RMBS") | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
U.S. Treasuries | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	271
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	271
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	286	271
U.S. Treasuries | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	8	0
U.S. Treasuries | Pension Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	271
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	271
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	278	271
U.S. Treasuries | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
U.S. Treasuries | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	2
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	2
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	2
U.S. Treasuries | Other Postretirement Benefits Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
U.S. Treasuries | Other Postretirement Benefits Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	2
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	2
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	2
U.S. Treasuries | Other Postretirement Benefits Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Foreign government/government agencies | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	21
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	21
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	18	21
Foreign government/government agencies | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Foreign government/government agencies | Pension Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	11
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	11
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	9	11
Foreign government/government agencies | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	10	1
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	10	1
Realized gains, net	0	0
Changes in unrealized gains (losses), net	(1)	(1)
Purchases	0	10
Sales	0	0
Transfers into Level 3 [2]	0	0
Transfers out of Level 3 [2]	0	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	9	10
CMBS | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	50
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	50
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	29	50
CMBS | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
CMBS | Pension Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	49
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	49
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	28	49
CMBS | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	1
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	1
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	1	1
Other Fixed Income [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	160
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	160
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	162	160
Other Fixed Income [Member] | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Other Fixed Income [Member] | Pension Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	160
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	160
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	162	160
Other Fixed Income [Member] | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Mortgage loans | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	143
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	143
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	131	143
Mortgage loans | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Mortgage loans | Pension Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Mortgage loans | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	143	165
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	143	165
Realized gains, net	0	(3)
Changes in unrealized gains (losses), net	1	8
Purchases	0	3
Sales	(13)	(30)
Transfers into Level 3 [2]	0	0
Transfers out of Level 3 [2]	0	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	131	143
Domestic | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	34
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	34
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	18	34
Domestic | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	11
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	11
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	14	11
Domestic | Pension Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	23
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	23
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	4	23
Domestic | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
International | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	45
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	45
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	37	45
International | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
International | Pension Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	45
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	45
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	37	45
International | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0
Total pension plan assets at fair value, in the fair value hierarchy | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	2,701
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	2,701
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	2,569	2,701
Total pension plan assets at fair value, in the fair value hierarchy | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	198
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	198
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	186	198
Total pension plan assets at fair value, in the fair value hierarchy | Pension Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	2,313
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	2,313
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	2,209	2,313
Total pension plan assets at fair value, in the fair value hierarchy | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	190
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	190
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	174	190
Limited partnerships | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	826
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	826
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	778	826
Other investments | Pension Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	1	1
Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	1	1
Realized gains, net	0	0
Changes in unrealized gains (losses), net	0	0
Purchases	0	0
Sales	0	0
Transfers into Level 3 [2]	0	0
Transfers out of Level 3 [2]	0	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 1	$ 1
Minimum | Equity Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	0.00%
Minimum | Equity Securities [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	0.00%
Minimum | Fixed income securities | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	75.00%
Minimum | Fixed income securities | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
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