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Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2020

Retirement Benefits [Abstract]

Weighted Average Assumptions Used in Calculating the Net Periodic Benefit Cost for Pension Plans and Other Postretirement Plans

Weighted Average Assumptions Used in Calculating the Benefit Obligations and the Net Amount Recognized

			Pension Benefits						Other Postretirement Benefits
			For the years ended December 31,
			2020			2019			2020			2019
Discount rate			2.65		%	3.33		%	2.36		%	3.15		%

Weighted Average Assumptions Used in Calculating the Net Periodic Benefit Cost for Pension Plans

			For the years ended December 31,
			2020			2019			2018
Discount rate			3.33		%	4.35		%	3.73		%
Expected long-term rate of return on plan assets			6.00		%	6.45		%	6.60		%

Weighted Average Assumptions Used in Calculating the Net Periodic Benefit Cost for Other Postretirement Plans

			For the years ended December 31,
			2020			2019			2018
Discount rate			3.15		%	4.23		%	3.55		%
Expected long-term rate of return on plan assets			5.60		%	6.00		%	6.60		%

Assumed Health Care Cost Trend Rates

Assumed Health Care Cost Trend Rates

			For the years ended December 31,
			2020			2019			2018
Pre-65 health care cost trend rate			7.00		%	7.00		%	6.50		%
Post-65 health care cost trend rate			N/A			N/A			N/A
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)			4.50		%	4.50		%	4.50		%
Year that the rate reaches the ultimate trend rate			2033			2033			2028

Change in Benefit Obligation

Change in Benefit Obligation

			Pension Benefits						Other Postretirement Benefits
			For the years ended December 31,
			2020			2019			2020			2019
Benefit obligation — beginning of year			$	4,498		$	4,000		$	223		$	220
Service cost			4			4			—			—
Interest cost			127			159			6			8
Plan participants’ contributions			—			—			11			13
Actuarial loss (gain)			12			48			(2)			6
Amendments			—			—			—			(2)
Changes in assumptions			437			488			16			19
Benefits and expenses paid			(203)			(201)			(34)			(41)
Benefit obligation — end of year			$	4,875		$	4,498		$	220		$	223

Change in Plan Assets

Change in Plan Assets

			Pension Benefits						Other Postretirement Benefits
			For the years ended December 31,
			2020			2019			2020			2019
Fair value of plan assets — beginning of year			$	3,914		$	3,344		$	75		$	85
Actual return on plan assets			568			701			6			12
Employer contributions [1]			70			70			5			—
Benefits paid [2]			(177)			(176)			(23)			(22)
Expenses paid			(12)			(26)			—			—
Foreign exchange adjustment			—			1			—			—
Fair value of plan assets — end of year			$	4,363		$	3,914		$	63		$	75
Funded status — end of year			$	(512)		$	(584)		$	(157)		$	(148)

[1]Employer contributions in 2020 and 2019 to the U.S. qualified defined benefit pension plan were discretionary, made in cash, and did not include contributions of the Company’s common stock.

[2]Other postretirement benefits paid represent non-key employee postretirement medical benefits paid from the Company's prefunded trust fund.

Defined Benefit Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets

Defined Benefit Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets

			As of December 31,
			2020			2019
Projected benefit obligation			$	4,875		$	4,498
Accumulated benefit obligation			$	4,875		$	4,498
Fair value of plan assets			$	4,363		$	3,914

Amounts Recognized in Consolidated Balance Sheets

Amounts Recognized in the Consolidated Balance Sheets

			Pension Benefits						Other Postretirement Benefits
			As of December 31,
			2020			2019			2020			2019
Other liabilities			$	512		$	584		$	157		$	148

Net Periodic Cost (Benefit)

Net Periodic Cost (Benefit)

			Pension Benefits									Other Postretirement Benefits
			For the years ended December 31,
			2020			2019			2018			2020			2019			2018
Service cost			$	4		$	4		$	4		$	—		$	—		$	—
Interest cost			127			159			142			6			8			7
Expected return on plan assets			(215)			(226)			(227)			(4)			(4)			(7)
Amortization of prior service credit			—			—			—			(7)			(7)			(7)
Amortization of actuarial loss			60			44			49			7			6			6
Net periodic cost (benefit)			$	(24)		$	(19)		$	(32)		$	2		$	3		$	(1)

Amounts Recognized in Other Comprehensive Income (Loss)

Amounts Recognized in Other Comprehensive Income (Loss)

			Pension Benefits									Other Postretirement Benefits
			For the years ended December 31,
			2020			2019			2018			2020			2019			2018
Amortization of actuarial loss			$	60		$	44		$	49		$	7		$	6		$	6
Amortization of prior service credit			—			—			—			(7)			(7)			(6)
Net loss arising during the year			(106)			(88)			(91)			(11)			(18)			3
Prior service cost (credit)			—			—			—			—			2			—
Total			$	(46)		$	(44)		$	(42)		$	(11)		$	(17)		$	3

Amounts in Accumulated Other Comprehensive Income (Loss), Before Tax, not yet Recognized as Components of Net Periodic Benefit Cost

Amounts in Accumulated Other Comprehensive Income (Loss), Before Tax, not yet Recognized as Components of Net Periodic Benefit Cost

			Pension Benefits									Other Postretirement Benefits
			As of December 31,
			2020			2019			2018			2020			2019			2018
Net loss			$	(2,098)		$	(2,052)		$	(2,008)		$	(136)		$	(132)		$	(120)
Prior service credit			—			—			—			60			67			72
Total			$	(2,098)		$	(2,052)		$	(2,008)		$	(76)		$	(65)		$	(48)

Plan Assets

Target Asset Allocation

			Pension Plans						Other Postretirement Plans
			Minimum			Maximum			Minimum			Maximum
Equity securities			5		%	35		%	15		%	45		%
Fixed income securities			50		%	70		%	55		%	85		%
Alternative assets			—		%	45		%	—		%	—		%

Pension Plan Assets at Fair Value

			As of December 31, 2020															As of December 31, 2019
Asset Category			Level 1			Level 2			Level 3			Total						Level 1			Level 2			Level 3			Total
Short-term investments:			$	75		$	25		$	—		$	100					$	34		$	54		$	—		$	88
Fixed Income Securities:
Corporate			—			2,303			39			2,342						—			2,058			27			2,085
RMBS			—			41			1			42						—			61			—			61
U.S. Treasuries			—			47			—			47						—			101			—			101
Foreign government			—			16			9			25						—			17			1			18
CMBS			—			30			—			30						—			32			—			32
Other fixed income [1]			—			137			—			137						—			96			1			97
Mortgage Loans			—			—			161			161						—			—			131			131
Equity Securities:
Domestic			513			—			—			513						429			1			—			430
International			271			—			—			271						261			—			—			261
Total pension plan assets at fair value, in the fair value hierarchy [2]			$	859		$	2,599		$	210		$	3,668					$	724		$	2,420		$	160		$	3,304
Other Investments, at net asset value [3]:
Private Market Alternatives												451															358
Hedge funds												224															212
Total pension plan assets at fair value			$	859		$	2,599		$	210		$	4,343					$	724		$	2,420		$	160		$	3,874

[1]Includes ABS, municipal bonds, and CDOs.

[2]Excludes approximately $20 and $40 as of December 31, 2020 and 2019, respectively, of investment receivables net of investment payables that are excluded from this disclosure requirement because they are trade receivables in the ordinary course of business where the carrying amount approximates fair value.

[3]Investments that are measured at net asset value per share or an equivalent and have not been classified in the fair value hierarchy.

Other Postretirement Plan Assets at Fair Value

			As of December 31, 2020															As of December 31, 2019
Asset Category			Level 1			Level 2			Level 3			Total						Level 1			Level 2			Level 3			Total
Short-term investments			$	2		$	—		$	—		$	2					$	3		$	—		$	—		$	3
Fixed Income Securities:
Corporate			—			16			—			16						—			18			—			18
RMBS			—			9			—			9						—			12			—			12
U.S. Treasuries			—			16			—			16						—			20			—			20
CMBS			—			1			—			1						—			1			—			1
Other fixed income			—			2			—			2						—			2			—			2
Equity Securities:
Large-cap			17			—			—			17						19			—			—			19
Total other postretirement plan assets at fair value			$	19		$	44		$	—		$	63					$	22		$	53		$	—		$	75

Pension Plan Assets Fair Value Measurements Using Significant Unobservable Inputs

Pension Plan Asset Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Assets			Corporate			RMBS			Foreign government			Mortgage loans			Other [1]						Totals
Fair Value as of January 1, 2020			$	27		$	—		$	1		$	131		$	1					$	160
Realized gains (losses), net			—			—			—			—			(1)						(1)
Changes in unrealized gains, net			1			—			—			4			1						6
Purchases			14			1			9			32			—						56
Settlements			—			—			—			—			—						—
Sales			(3)			—			—			(6)			—						(9)
Transfers into Level 3			—			—			—			—			—						—
Transfers out of Level 3			—			—			(1)			—			(1)						(2)
Fair Value as of December 31, 2020			$	39		$	1		$	9		$	161		$	—					$	210
Fair Value as of January 1, 2019			$	14		$	1		$	2		$	133		$	1					$	151
Realized gains, net			3			—			—			—			—						3
Changes in unrealized gains, net			2			—			—			4			—						6
Purchases			7			—			—			—			—						7
Settlements			—			—			—			—			—						—
Sales			(3)			(1)			(1)			(6)			—						(11)
Transfers into Level 3			4			—			—			—			—						4
Transfers out of Level 3			—			—			—			—			—						—
Fair Value as of December 31, 2019			$	27		$	—		$	1		$	131		$	1					$	160

[1]"Other" includes U.S. Treasuries, Other fixed income and CMBS investments.

Amounts of Benefits Expected to be Paid over the next Ten Years from Pension and other Postretirement Plans

Amounts of Benefits Expected to be Paid over the next Ten Years from Pension and other Postretirement Plans as of December 31, 2020

			Pension Benefits			Other Postretirement Benefits
2021			$	223		$	22
2022			229			20
2023			235			18
2024			242			17
2025			246			15
2026 - 2030			1,252			59
Total			$	2,427		$	151

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