XML 57 R46.htm IDEA: XBRL DOCUMENT
v3.23.3

Debt - Summary of Debt (Detail) - USD ($) | Sep. 30, 2023 | May 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Mar. 31, 2022 | Mar. 31, 2020 | Oct. 31, 2018 | Mar. 31, 2018 | Apr. 30, 2017 | Aug. 31, 2016 | Jan. 31, 2015 | Apr. 30, 2014 | Nov. 30, 2002 | Mar. 31, 1999
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt | [1] | $ 6,887,600,000 |  | $ 6,388,300,000 | $ 6,387,400,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | 5,932,100,000 |  | 5,717,900,000 | 5,634,700,000 |  |  |  |  |  |  |  |  |  |
2.45% Senior Notes due 2027 (issued: $500.0, August 2016) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 498,500,000 |  | 498,200,000 | 498,100,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | 455,800,000 |  | 457,700,000 | 459,700,000 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  |  |  |  |  |  | 2.45% |  |  |  |
Debt, face amount |  |  |  |  |  |  |  |  |  |  | $ 500,000,000.0 |  |  |  |
2.50% Senior Notes due 2027 (issued: $500.0, March 2022) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 497,900,000 |  | 497,500,000 | 497,400,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | 454,000,000.0 |  | 460,300,000 | 451,600,000 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  | 2.50% |  |  |  |  |  |  |  |  |
Debt, face amount |  |  |  |  |  | $ 500,000,000.0 |  |  |  |  |  |  |  |  |
6 5/8% Senior Notes due 2029 (issued: $300.0, March 1999) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 297,700,000 |  | 297,500,000 | 297,400,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | 320,800,000 |  | 326,800,000 | 322,100,000 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.625%
Debt, face amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 300,000,000.0
4.00% Senior Notes due 2029 (issued: $550.0, October 2018) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 546,800,000 |  | 546,400,000 | 546,300,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | 518,900,000 |  | 527,800,000 | 519,500,000 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  |  |  | 4.00% |  |  |  |  |  |  |
Debt, face amount |  |  |  |  |  |  |  | $ 550,000,000.0 |  |  |  |  |  |  |
3.20% Senior Notes due 2030 (issued: $500.0, March 2020) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 497,200,000 |  | 496,900,000 | 496,800,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | 435,100,000 |  | 448,600,000 | 439,300,000 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  |  | 3.20% |  |  |  |  |  |  |  |
Debt, face amount |  |  |  |  |  |  | $ 500,000,000.0 |  |  |  |  |  |  |  |
3.00% Senior Notes due 2032 (issued: $500.0, March 2022) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 496,200,000 |  | 495,900,000 | 495,800,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | 420,500,000 |  | 438,100,000 | 418,800,000 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  | 3.00% |  |  |  |  |  |  |  |  |
Debt, face amount |  |  |  |  |  | $ 500,000,000.0 |  |  |  |  |  |  |  |  |
6.25% Senior Notes due 2032 (issued: $400.0, November 2002) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 396,600,000 |  | 396,400,000 | 396,400,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | 414,300,000 |  | 435,400,000 | 426,000,000.0 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.25% |
Debt, face amount |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 400,000,000.0 |
4.95% Senior Notes due 2033 (issued: $500.0, May 2023) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 496,400,000 |  | 0 | 0 |  |  |  |  |  |  |  |  |  |
Fair value |  | 474,700,000 |  | 0 | 0 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  | 4.95% |  |  |  |  |  |  |  |  |  |  |  |
Debt, face amount |  |  | $ 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |
4.35% Senior Notes due 2044 (issued: $350.0, April 2014) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 347,000,000.0 |  | 346,900,000 | 346,900,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | 280,900,000 |  | 298,400,000 | 298,500,000 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 4.35% |  |
Debt, face amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 350,000,000.0 |  |
3.70% Senior Notes due 2045 (issued: $400.0, January 2015) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 395,800,000 |  | 395,700,000 | 395,700,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | 288,200,000 |  | 310,200,000 | 305,700,000 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  |  |  |  |  |  |  | 3.70% |  |  |
Debt, face amount |  |  |  |  |  |  |  |  |  |  |  | $ 400,000,000.0 |  |  |
4.125% Senior Notes due 2047 (issued: $850.0, April 2017) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 842,200,000 |  | 842,100,000 | 842,000,000.0 |  |  |  |  |  |  |  |  |  |
Fair value |  | 666,300,000 |  | 716,200,000 | 710,300,000 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  |  |  |  |  | 4.125% |  |  |  |  |
Debt, face amount |  |  |  |  |  |  |  |  |  | $ 850,000,000.0 |  |  |  |  |
4.20% Senior Notes due 2048 (issued: $600.0, March 2018) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 590,600,000 |  | 590,400,000 | 590,300,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | 473,300,000 |  | 507,000,000.0 | 505,900,000 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  |  |  |  | 4.20% |  |  |  |  |  |
Debt, face amount |  |  |  |  |  |  |  |  | $ 600,000,000.0 |  |  |  |  |  |
3.95% Senior Notes due 2050 (issued: $500.0, March 2020) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 491,100,000 |  | 490,900,000 | 490,900,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | 373,500,000 |  | 404,900,000 | 396,600,000 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  |  | 3.95% |  |  |  |  |  |  |  |
Debt, face amount |  |  |  |  |  |  | $ 500,000,000.0 |  |  |  |  |  |  |  |
3.70% Senior Notes due 2052 (issued: $500.0, March 2022) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 493,600,000 |  | 493,500,000 | 493,400,000 |  |  |  |  |  |  |  |  |  |
Fair value |  | $ 355,800,000 |  | $ 386,500,000 | $ 380,700,000 |  |  |  |  |  |  |  |  |  |
Debt, stated interest rate |  |  |  |  |  | 3.70% |  |  |  |  |  |  |  |  |
Debt, face amount |  |  |  |  |  | $ 500,000,000.0 |  |  |  |  |  |  |  |  |
[1] | Consists of long-term debt. See Note 4 – Debt for further discussion.

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482900/835-30-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-2 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482949/835-30-55-8 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482900/835-30-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(f)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69E -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69E Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69F -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69F Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 11: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1E -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1E -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1E -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1I -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the aggregate of total long-term debt, including current maturities and short-term debt. + References No definition available. + Details
Name: | us-gaap_DebtLongtermAndShorttermCombinedAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-4 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
Name: | us-gaap_LongTermDebtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesTwoPointFourFivePercentDueTwentyTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesTwoPointFiveZeroPercentDueTwentyTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesSixPointSixTwoFivePercentDueTwentyTwentyNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesFourPointZeroZeroPercentDueTwentyTwentyNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesThreePointTwoZeroPercentDueTwentyThirtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesThreePointZeroZeroPercentDueTwentyThirtyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesSixPointTwoFivePercentDueTwentyThirtyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesFourPointNineFivePercentDueTwentyThirtyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesfourpointthreefivepercentdue2044Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesthreepointsevenzeropercentduetwentyfortyfiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesfourpointonetwofivepercentduetwentyfortysevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesFourPointTwoZeroPercentDueTwentyFortyEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesThreePointNineFivePercentDueTwentyFiftyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pgr_SeniorNotesThreePointSevenZeroPercentDueTwentyFiftyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |