Contingencies, Commitments and Guarantees (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments - Leases

The Company, as lessee, has entered into various lease and sublease agreements for office space and equipment. Future minimum gross rental payments relating to these lease arrangements are as follows:

	Amount
	(In millions)
2019	$	292
2020	282
2021	260
2022	224
2023	209
Thereafter	859
Total	$	2,126

Asbestos Related Claims

Loss Contingencies [Line Items]

Schedule of Loss Contingencies by Contingency

The approximate total number of asbestos personal injury claims pending against MLIC as of the dates indicated, the approximate number of new claims during the years ended on those dates and the approximate total settlement payments made to resolve asbestos personal injury claims at or during those years are set forth in the following table:

	December 31,
	2018		2017		2016
	(In millions, except number of claims)
Asbestos personal injury claims at year end	62,522		62,930		67,223
Number of new claims during the year	3,359		3,514		4,146
Settlement payments during the year (1)	$	51.4	$	48.6	$	50.2

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(1) Settlement payments represent payments made by MLIC during the year in connection with settlements made in that year and in prior years. Amounts do not include MLIC’s attorneys’ fees and expenses.

Insurance-related Assessments

Loss Contingencies [Line Items]

Schedule of Loss Contingencies by Contingency

Assets and liabilities held for insolvency assessments were as follows:

	December 31,
	2018		2017
	(In millions)
Other Assets:
Premium tax offset for future discounted and undiscounted assessments	$	47	$	56
Premium tax offset currently available for paid assessments	46		50
Total	$	93	$	106
Other Liabilities:
Insolvency assessments	$	67	$	75