Consolidated Statements of Operations - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues
Premiums and other considerations		$ 5,339.7	$ 4,841.5	$ 6,037.4
Fees and other revenues		4,177.7	5,012.6	4,511.1
Net investment income (loss)		3,830.4	4,406.1	3,890.6
Net realized capital gains (losses)	[1]	(258.4)	2.5	302.6
Net realized capital gains (losses) on funds withheld assets	[1]	749.4
Change in fair value of funds withheld embedded derivative		3,652.8	0.0	0.0
Total revenues		17,491.6	14,262.7	14,741.7
Expenses
Benefits, claims and settlement expenses		6,370.8	7,097.0	8,281.5
Dividends to policyholders		94.8	94.8	120.2
Operating expenses		4,965.9	4,987.3	4,646.5
Total expenses		11,431.5	12,179.1	13,048.2
Income (loss) before income taxes		6,060.1	2,083.6	1,693.5
Income taxes (benefits)		1,207.9	326.2	265.0
Net income (loss)		4,852.2	1,757.4	1,428.5
Net income (loss) attributable to noncontrolling interest		40.6	46.8	32.7
Net income (loss) attributable to Principal Financial Group, Inc.		$ 4,811.6	$ 1,710.6	$ 1,395.8
Earnings per common share
Basic earnings per common share (in dollars per share)		$ 19.16	$ 6.36	$ 5.08
Diluted earnings per common share (in dollars per share)		$ 18.85	$ 6.27	$ 5.05

[1] Includes realized and unrealized gains (losses). See Note 4, Investments, for further details.