XML 45 R33.htm IDEA: XBRL DOCUMENT v3.21.2

Stock-Based Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2021

Stock-Based Compensation Plans

Stock-Based Compensation Disclosures (Table)

​

​	​	​	​	​	​	​
​	​	For the six months ended June 30,
​		2021			2020
​	​	(in millions)
Compensation cost	​	$	53.6	​	$	47.3
Related income tax benefit	​		10.6	​		9.3
Capitalized as part of an asset	​		0.8	​		0.8

​

Nonqualified Stock Options Fair Value (Table)

​

​	​	​	​	​
​	​	For the six months ended		​
​		June 30, 2021		​
​	​	​	​	​
Expected volatility		​	34.2	%
Expected term (in years)		​	7.0	​
Risk-free interest rate		​	1.2	%
Expected dividend yield		​	3.82	%
Weighted average estimated fair value per common share		$	15.67	​

​

X

- Definition

Tabular disclosure of compensation-related costs for share-based compensation, including amounts charged to income and amount capitalized as part of an asset.

+ References

No definition available.

+ Details

Name:	pfg_ScheduleOfCompensationRelatedCostsChargedToIncomeOrCapitalizedAsAssetTableTextBlock
Namespace Prefix:	pfg_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration