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Debt and Financing Arrangements - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | May 01, 2019
Notes Payable to Banks [Member] | 3.9 percent due 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Repurchased Face Amount | $ 12 |
Debt Instrument, Interest Rate, Stated Percentage | 3.90% |
Notes Payable to Banks [Member] | $750 million term loan due earlier of Jan 2020 or 5 days after PS Close [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Face Amount | $ 750 |
Revolving Credit Facility [Member] | 250 million USD maturing in Mar 2019 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Term | 364 days |
Line of Credit Facility, Borrowing Capacity, Expired | $ 250 |
Revolving Credit Facility [Member] | $250 million USD expiring in Mar 2020 [Member] |  |
Debt Instrument [Line Items] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 250 |
Revolving Credit Facility [Member] | 150 million USD maturing in Feb 2019 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Term | 364 days |
Line of Credit Facility, Borrowing Capacity, Expired | $ 150 |
Revolving Credit Facility [Member] | $150 million USD expiring in February 2020 [Member] |  |
Debt Instrument [Line Items] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 150 |
Revolving Credit Facility [Member] | 200 million USD maturing in Jan 2019 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Term | 364 days |
Line of Credit Facility, Borrowing Capacity, Expired | $ 200 |
Revolving Credit Facility [Member] | $350 million USD expiring in Jan 2020 [Member] |  |
Debt Instrument [Line Items] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 350 |
Subsequent Event [Member] |  |
Debt Instrument [Line Items] |  |
Debt tender offer to purchase up to $1.5 billion in aggregate principal |  | $ 1,500

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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