Securities Financing Activities (Tables)

6 Months Ended

Jun. 30, 2020

Transfers and Servicing [Abstract]

Schedule of assets and liabilities subject to enforceable master netting arrangements

	Gross Amounts Recognized		Gross Amounts Offset in the Condensed Consolidated Balance Sheets		Net Amount Presented in the Condensed Consolidated Balance Sheets		Financial Instruments Collateral Received/Pledged (1)		Cash Collateral Received/ Pledged (1)		Net Amount
	(In Thousands)
June 30, 2020
Securities purchased under agreements to resell:
Subject to a master netting arrangement	$	4,246,839	$	4,079,370	$	167,469	$	167,469	$	—	$	—
Securities sold under agreements to repurchase:
Subject to a master netting arrangement	$	4,328,851	$	4,079,370	$	249,481	$	249,481	$	—	$	—
December 31, 2019
Securities purchased under agreements to resell:
Subject to a master netting arrangement	$	656,504	$	477,590	$	178,914	$	178,914	$	—	$	—
Securities sold under agreements to repurchase:
Subject to a master netting arrangement	$	650,618	$	477,590	$	173,028	$	173,028	$	—	$	—

(1) The actual amount of collateral received/pledged is limited to the asset/liability balance and does not include excess collateral received/pledged. When excess collateral exists, the collateral shown in the table above has been allocated based on the percentage of the actual amount of collateral posted.

Schedule of securities sold under agreements to repurchase

The following table presents the Company's related activity, by collateral type and remaining contractual maturity.

	Remaining Contractual Maturity of the Agreements
	Overnight and Continuous		Up to 30 days		30 - 90 days		Greater Than 90 days		Total
	(In Thousands)
June 30, 2020
Securities sold under agreements to repurchase:
U.S. Treasury and other U.S. government agencies	$	1,610,392	$	1,870,709	$	211,000	$	636,750	$	4,328,851
Mortgage-backed securities	—		—		—		—		—
Total	$	1,610,392	$	1,870,709	$	211,000	$	636,750	$	4,328,851
December 31, 2019
Securities sold under agreements to repurchase:
U.S. Treasury and other U.S. government agencies	$	321,310	$	—	$	—	$	305,750	$	627,060
Mortgage-backed securities	—		—		23,558		—		23,558
Total	$	321,310	$	—	$	23,558	$	305,750	$	650,618