Consolidated Statements of Financial Position - USD ($) $ in Millions		Dec. 31, 2025	Dec. 31, 2024
Assets
Fixed maturities, available-for-sale	[1]	$ 73,360.7	$ 68,251.0
Fixed maturities, trading (2025 and 2024 include $185.0 million and $205.9 million related to consolidated variable interest entities)		1,243.8	1,023.3
Equity securities (2025 and 2024 include $428.6 million and $367.9 million related to consolidated variable interest entities)		2,237.3	2,295.0
Mortgage loans (2025 and 2024 include $726.5 million and $944.5 million related to consolidated variable interest entities and $0.0 million and $140.6 million measured at fair value under the fair value option)		21,008.3	20,484.2
Real estate (2025 and 2024 include $819.4 million and $781.8 million related to consolidated variable interest entities)		2,409.7	2,464.5
Policy loans		866.7	867.5
Other investments (2025 and 2024 include $838.4 million and $625.6 million related to consolidated variable interest entities and $167.1 million and $129.0 million measured at fair value under the fair value option)		9,775.0	7,990.3
Total investments		110,901.5	103,375.8
Cash and cash equivalents (2025 and 2024 include $89.1 million and $86.1 million related to consolidated variable interest entities)		4,431.0	4,211.9
Accrued investment income (2025 and 2024 include $43.8 million and $19.1 million related to consolidated variable interest entities)		870.9	828.6
Reinsurance recoverable and deposit receivable		19,000.1	19,490.1
Premiums due and other receivables		3,894.5	3,771.5
Deferred acquisition costs		4,071.6	4,006.9
Market risk benefit asset		197.1	199.5
Property and equipment		701.4	769.4
Goodwill		1,600.5	1,549.7
Other intangibles		1,267.0	1,389.9
Separate account assets (2025 and 2024 include $41,450.5 million and $32,802.2 million related to consolidated variable interest entities)		193,622.6	173,327.1
Other assets		818.3	743.2
Total assets		341,376.5	313,663.6
Liabilities
Contractholder funds		45,380.3	43,099.6
Future policy benefits and claims		51,749.7	48,179.4
Market risk benefit liability		66.9	62.1
Other policyholder funds		940.8	966.4
Short-term debt (2025 and 2024 include $0.0 million and $119.0 million related to consolidated variable interest entities)		27.7	152.7
Long-term debt		3,926.3	3,955.3
Income taxes currently payable		29.5	8.6
Deferred income taxes		1,856.4	1,706.0
Separate account liabilities (2025 and 2024 include $41,450.5 million and $32,802.2 million related to consolidated variable interest entities)		193,622.6	173,327.1
Funds withheld payable		17,783.4	18,103.7
Other liabilities (2025 and 2024 include $69.4 million and $108.8 million related to consolidated variable interest entities)		13,601.6	12,633.7
Total liabilities		328,985.2	302,194.6
Redeemable noncontrolling interest (2025 and 2024 include $440.9 million and $309.9 million related to consolidated variable interest entities)		474.3	337.7
Stockholders' equity
Common stock, par value $0.01 per share; 2,500,000,000 shares authorized; 496,884,232 and 494,734,908 shares issued as of 2025 and 2024; 217,380,912 and 226,225,161 shares outstanding as of 2025 and 2024		5.0	4.9
Additional paid-in capital		11,275.4	11,100.9
Retained earnings (accumulated deficit)		18,071.3	17,583.5
Accumulated other comprehensive loss		(4,188.4)	(5,224.8)
Treasury stock, at cost (279,503,320 and 268,509,747 shares as of 2025 and 2024)		(13,279.4)	(12,378.1)
Total stockholders' equity attributable to Principal Financial Group, Inc.		11,883.9	11,086.4
Noncontrolling interest		33.1	44.9
Total stockholders' equity		11,917.0	11,131.3
Total liabilities and stockholders' equity		$ 341,376.5	$ 313,663.6

[1] See Note 4, Investments, for further details relating to the amortized cost of fixed maturities, available-for-sale.