Guarantor Subsidiaries (Tables)

9 Months Ended

Sep. 30, 2020

Guarantor Subsidiaries [Abstract]

Consolidating Balance Sheet

CONSOLIDATING BALANCE SHEET

(Millions of dollars, except share amounts)	September 30, 2020
Assets	Parent Company		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations		Consolidated
Current assets
Cash and cash equivalents	$	—	$	315.8	$	1.7	$	—	$	—	$	317.5
Accounts receivable—trade, less allowance for doubtful accounts of $0.1 in 2020	—		142.6		0.1		—		—		142.7
Inventories, at lower of cost or market	—		268.1		—		—		—		268.1
Prepaid expenses and other current assets	—		14.8		0.1		—		—		14.9
Total current assets	—		741.3		1.9		—		—		743.2
Property, plant and equipment, at cost less accumulated depreciation and amortization of $1,151.3 in 2020	—		1,842.8		11.2		—		—		1,854.0
Investments in subsidiaries	2,916.9		143.4		—		—		(3,060.3)		—
Other assets	—		191.0		—		—		—		191.0
Total assets	$	2,916.9	$	2,918.5	$	13.1	$	—	$	(3,060.3)	$	2,788.2
Liabilities and Stockholders' Equity
Current liabilities
Current maturities of long-term debt	$	—	$	51.2	$	—	$	—	$	—	$	51.2
Inter-company accounts payable	230.9		(39.2)		(37.4)		(154.3)		—		—
Trade accounts payable and accrued liabilities	—		442.5		0.3		—		—		442.8
Income taxes payable	—		19.8		(0.4)		—		—		19.4
Total current liabilities	230.9		474.3		(37.5)		(154.3)		—		513.4
Long-term debt, including capitalized lease obligations	—		963.2		—		—		—		963.2
Deferred income taxes	—		217.5		—		—		—		217.5
Asset retirement obligations	—		34.0		—		—		—		34.0
Deferred credits and other liabilities	—		164.4		—		—		—		164.4
Total liabilities	230.9		1,853.4		(37.5)		(154.3)		—		1,892.5
Stockholders' Equity
Preferred Stock, par $0.01 (authorized 20,000,000 shares, none outstanding)	—		—		—		—		—		—
Common Stock, par 0.01 (authorized 200,000,000 shares, 46,767,164 shares issued at September 30, 2020)	0.5		—		0.1		—		(0.1)		0.5
Treasury Stock (18,199,448 shares held at September 30, 2020)	(1,321.8)		—		—		—		—		(1,321.8)
Additional paid in capital (APIC)	1,179.8		579.1		52.0		87.5		(1,368.4)		530.0
Retained earnings	2,827.5		488.1		(1.5)		66.8		(1,691.8)		1,689.1
Accumulated other comprehensive income (loss) (AOCI)	—		(2.1)		—		—		—		(2.1)
Total stockholders' equity	2,686.0		1,065.1		50.6		154.3		(3,060.3)		895.7
Total liabilities and stockholders' equity	$	2,916.9	$	2,918.5	$	13.1	$	—	$	(3,060.3)	$	2,788.2

CONSOLIDATING BALANCE SHEET

(Millions of dollars, except share amounts)	December 31, 2019
Assets	Parent Company		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations		Consolidated
Current assets
Cash and cash equivalents	$	—	$	279.4	$	0.9	$	—	$	—	$	280.3
Accounts receivable—trade, less allowance for doubtful accounts of $1.2 in 2019	—		173.0		(0.1)		—		—		172.9
Inventories, at lower of cost or market	—		227.6		—		—		—		227.6
Prepaid expenses and other current assets	—		29.6		0.4		—		—		30.0
Total current assets	—		709.6		1.2		—		—		710.8
Property, plant and equipment, at cost less accumulated depreciation and amortization of $1,079.2 in 2019	—		1,799.1		8.2		—		—		1,807.3
Investments in subsidiaries	2,591.8		143.9		—		—		(2,735.7)		—
Other assets	—		169.1		—		—		—		169.1
Total assets	$	2,591.8	$	2,821.7	$	9.4	$	—	$	(2,735.7)	$	2,687.2
Liabilities and Stockholders' Equity
Current liabilities
Current maturities of long-term debt	$	—	$	38.8	$	—	$	—	$	—	$	38.8
Inter-company accounts payable	(0.1)		196.1		(41.7)		(154.3)		—		—
Trade accounts payable and accrued liabilities	—		466.2		—		—		—		466.2
Total current liabilities	(0.1)		701.1		(41.7)		(154.3)		—		505.0
Long-term debt, including capitalized lease obligations	—		999.3		—		—		—		999.3
Deferred income taxes	—		216.7		—		—		—		216.7
Asset retirement obligations	—		32.8		—		—		—		32.8
Deferred credits and other liabilities	—		130.4		—		—		—		130.4
Total liabilities	(0.1)		2,080.3		(41.7)		(154.3)		—		1,884.2
Stockholders' Equity
Preferred Stock, par $0.01 (authorized 20,000,000 shares, none outstanding)	—		—		—		—		—		—
Common Stock, par $0.01 (authorized 200,000,000 shares, 46,767,164 shares issued at December 31, 2019)	0.5		—		0.1		—		(0.1)		0.5
Treasury Stock (16,307,048 shares held at December 31, 2019 )	(1,099.8)		—		—		—		—		(1,099.8)
Additional paid in capital (APIC)	1,188.8		578.8		52.0		87.5		(1,368.4)		538.7
Retained earnings	2,502.4		161.9		(1.0)		66.8		(1,367.2)		1,362.9
Accumulated other comprehensive income (AOCI)	—		0.7		—		—		—		0.7
Total stockholders' equity	2,591.9		741.4		51.1		154.3		(2,735.7)		803.0
Total liabilities and stockholders' equity	$	2,591.8	$	2,821.7	$	9.4	$	—	$	(2,735.7)	$	2,687.2

Consolidating Income Statement

CONSOLIDATING INCOME STATEMENT AND COMPREHENSIVE INCOME

(Millions of dollars)	Three Months Ended September 30, 2020
Operating Revenues	Parent Company		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations		Consolidated
Petroleum product sales	$	—	$	2,056.0	$	—	$	—	$	—	$	2,056.0
Merchandise sales	—		756.8		—		—		—		756.8
Other operating revenues	—		26.1		0.1		—		—		26.2
Total operating revenues	—		2,838.9		0.1		—		—		2,839.0
Operating Expenses
Petroleum product cost of goods sold	—		1,862.2		—		—		—		1,862.2
Merchandise cost of goods sold	—		638.7		—		—		—		638.7
Station and other operating expenses	—		142.8		0.1		—		—		142.9
Depreciation and amortization	—		40.5		0.1		—		—		40.6
Selling, general and administrative	—		53.7		—		—		—		53.7
Accretion of asset retirement obligations	—		0.6		—		—		—		0.6
Total operating expenses	—		2,738.5		0.2		—		—		2,738.7
Net settlement proceeds	—		—		—		—		—		—
Gain (loss) on sale of assets	—		—		—		—		—		—
Income (loss) from operations	—		100.4		(0.1)		—		—		100.3
Other income (expense)
Interest income	—		—		—		—		—		—
Interest expense	—		(12.4)		—		—		—		(12.4)
Other nonoperating income	—		0.4		(0.2)		—		—		0.2
Total other income (expense)	—		(12.0)		(0.2)		—		—		(12.2)
Income (loss) before income taxes	—		88.4		(0.3)		—		—		88.1
Income tax expense	—		21.3		(0.1)		—		—		21.2
Income (loss)	—		67.1		(0.2)		—		—		66.9
Equity earnings in affiliates, net of tax	66.9		(0.2)		—		—		(66.7)		—
Net Income (Loss)	66.9		66.9		(0.2)		—		(66.7)		66.9
Other comprehensive loss	—		0.4		—		—		—		0.4
Comprehensive income (loss)	$	66.9	$	67.3	$	(0.2)	$	—	$	(66.7)	$	67.3

CONSOLIDATING INCOME STATEMENT AND COMPREHENSIVE INCOME

(Millions of dollars)	Three Months Ended September 30, 2019
Operating Revenues	Parent Company		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations		Consolidated
Petroleum product sales	$	—	$	2,965.5	$	—	$	—	$	—	$	2,965.5
Merchandise sales	—		681.1		—		—		—		681.1
Other operating revenues	—		11.0		—		—		—		11.0
Total operating revenues	—		3,657.6		—		—		—		3,657.6
Operating Expenses
Petroleum product cost of goods sold	—		2,749.6		—		—		—		2,749.6
Merchandise cost of goods sold	—		569.9		—		—		—		569.9
Station and other operating expenses	—		143.4		—		—		—		143.4
Depreciation and amortization	—		37.6		—		—		—		37.6
Selling, general and administrative	—		36.0		—		—		—		36.0
Accretion of asset retirement obligations	—		0.6		—		—		—		0.6
Total operating expenses	—		3,537.1		—		—		—		3,537.1
Net settlement proceeds	—		—		—		—		—		—
Gain (loss) on sale of assets	—		0.2		—		—		—		0.2
Income (loss) from operations	—		120.7		—		—		—		120.7
Other income (expense)
Interest income	—		0.8		—		—		—		0.8
Interest expense	—		(15.3)		—		—		—		(15.3)
Loss on early debt extinguishment	—		(14.8)		—		—		—		(14.8)
Other nonoperating income	—		—		(0.1)		—		—		(0.1)
Total other income (expense)	—		(29.3)		(0.1)		—		—		(29.4)
Income (loss) before income taxes	—		91.4		(0.1)		—		—		91.3
Income tax expense	—		22.1		—		—		—		22.1
Income (loss)	—		69.3		(0.1)		—		—		69.2
Equity earnings in affiliates, net of tax	69.2		(0.1)		—		—		(69.1)		—
Net Income (Loss)	69.2		69.2		(0.1)		—		(69.1)		69.2
Other comprehensive income (loss)	—		—		—		—		—		—
Comprehensive income (loss)	$	69.2	$	69.2	$	(0.1)	$	—	$	(69.1)	$	69.2

CONSOLIDATING INCOME STATEMENT AND COMPREHENSIVE INCOME

(Millions of dollars)	Nine Months Ended September 30, 2020
Operating Revenues	Parent Company		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations		Consolidated
Petroleum product sales	$	—	$	6,125.1	$	—	$	—	$	—	$	6,125.1
Merchandise sales	—		2,211.4		—		—		—		2,211.4
Other operating revenues	—		66.8		0.1		—		—		66.9
Total operating revenues	—		8,403.3		0.1		—		—		8,403.4
Operating Expenses
Petroleum product cost of goods sold	—		5,409.8		—		—		—		5,409.8
Merchandise cost of goods sold	—		1,867.4		—		—		—		1,867.4
Station and other operating expenses	—		409.7		0.1		—		—		409.8
Depreciation and amortization	—		119.3		0.2		—		—		119.5
Selling, general and administrative	—		130.0		—		—		—		130.0
Accretion of asset retirement obligations	—		1.7		—		—		—		1.7
Total operating expenses	—		7,937.9		0.3		—		—		7,938.2
Gain (loss) on sale of assets	—		1.4		—		—		—		1.4
Income (loss) from operations	—		466.8		(0.2)		—		—		466.6
Other income (expense)
Interest income	—		1.0		—		—		—		1.0
Interest expense	—		(38.7)		—		—		—		(38.7)
Loss on early debt extinguishment	—		—		—		—		—		—
Other nonoperating income	—		—		(0.5)		—		—		(0.5)
Total other income (expense)	—		(37.7)		(0.5)		—		—		(38.2)
Income (loss) before income taxes	—		429.1		(0.7)		—		—		428.4
Income tax expense	—		103.5		(0.2)		—		—		103.3
Income (loss)	—		325.6		(0.5)		—		—		325.1
Equity earnings in affiliates, net of tax	325.1		(0.5)		—		—		(324.6)		—
Net Income (Loss)	325.1		325.1		(0.5)		—		(324.6)		325.1
Other comprehensive income (loss)	—		(2.8)		—		—		—		(2.8)
Comprehensive income (loss)	$	325.1	$	322.3	$	(0.5)	$	—	$	(324.6)	$	322.3

CONSOLIDATING INCOME STATEMENT AND COMPREHENSIVE INCOME

(Millions of dollars)	Nine Months Ended September 30, 2019
Operating Revenues	Parent Company		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations		Consolidated
Petroleum product sales	$	—	$	8,595.0	$	—	$	—	$	—	$	8,595.0
Merchandise sales	—		1,946.1		—		—		—		1,946.1
Other operating revenues	—		33.3		—		—		—		33.3
Total operating revenues	—		10,574.4		—		—		—		10,574.4
Operating Expenses
Petroleum product cost of goods sold	—		8,104.8		—		—		—		8,104.8
Merchandise cost of goods sold	—		1,631.9		—		—		—		1,631.9
Station and other operating expenses	—		421.8		—		—		—		421.8
Depreciation and amortization	—		113.8		—		—		—		113.8
Selling, general and administrative	—		105.7		—		—		—		105.7
Accretion of asset retirement obligations	—		1.6		—		—		—		1.6
Total operating expenses	—		10,379.6		—		—		—		10,379.6
Net settlement proceeds	—		0.1		—		—		—		0.1
Gain (loss) on sale of assets	—		0.1		—		—		—		0.1
Income (loss) from operations	—		195.0		—		—		—		195.0
Other income (expense)
Interest income	—		2.4		—		—		—		2.4
Interest expense	—		(42.1)		—		—		—		(42.1)
Loss on early debt extinguishment	—		(14.8)		—		—		—		(14.8)
Other nonoperating income	—		0.5		(0.5)		—		—		—
Total other income (expense)	—		(54.0)		(0.5)		—		—		(54.5)
Income (loss) before income taxes	—		141.0		(0.5)		—		—		140.5
Income tax expense	—		33.4		(0.1)		—		—		33.3
Income (loss)	—		107.6		(0.4)		—		—		107.2
Equity earnings in affiliates, net of tax	107.2		(0.4)		—		—		(106.8)		—
Net Income (Loss)	107.2		107.2		(0.4)		—		(106.8)		107.2
Other comprehensive income (loss)	—		—		—		—		—		—
Comprehensive income (loss)	$	107.2	$	107.2	$	(0.4)	$	—	$	(106.8)	$	107.2

Consolidating Statement of Cash Flow

CONSOLIDATING STATEMENT OF CASH FLOW

(Millions of dollars)	Nine Months Ended September 30, 2020
Operating Activities	Parent Company		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations		Consolidated
Net income (loss)	$	325.1	$	325.1	$	(0.5)	$	—	$	(324.6)	$	325.1
Adjustments to reconcile net income (loss) to net cash provided by (required by) operating activities
Depreciation and amortization	—		119.3		0.2		—		—		119.5
Deferred and noncurrent income tax charges (credits)	—		1.7		—		—		—		1.7
Accretion of asset retirement obligations	—		1.7		—		—		—		1.7
(Gain) loss on sale of assets	—		(1.4)		—		—		—		(1.4)
Net (increase) decrease in noncash operating working capital	—		(2.1)		(0.1)		—		—		(2.2)
Equity in earnings of affiliates	(325.1)		0.5		—		—		324.6		—
Other operating activities - net	—		23.4		—		—		—		23.4
Net cash provided by (required by) operating activities	—		468.2		(0.4)		—		—		467.8
Investing Activities
Property additions	—		(166.2)		(3.2)		—		—		(169.4)
Proceeds from sale of assets	—		7.7		—		—		—		7.7
Other investing activities - net	—		(1.6)		—		—		—		(1.6)
Net cash provided by (required by) investing activities	—		(160.1)		(3.2)		—		—		(163.3)
Financing Activities
Purchase of treasury stock	(230.5)		—		—		—		—		(230.5)
Borrowings of debt	—		—		—		—		—		—
Repayments of debt	—		(26.1)		—		—		—		(26.1)
Amounts related to share-based compensation	—		(10.7)		—		—		—		(10.7)
Net distributions to parent	230.5		(234.9)		4.4		—		—		—
Net cash provided by (required by) financing activities	—		(271.7)		4.4		—		—		(267.3)
Net increase (decrease) in cash and cash equivalents	—		36.4		0.8		—		—		37.2
Cash, cash equivalents, and restricted cash at January 1	—		279.4		0.9		—		—		280.3
Cash, cash equivalents, and restricted cash at September 30	$	—	$	315.8	$	1.7	$	—	$	—	$	317.5

CONSOLIDATING STATEMENT OF CASH FLOW

(Millions of dollars)	Nine Months Ended September 30, 2019
Operating Activities	Parent Company		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations		Consolidated
Net income (loss)	$	107.2	$	107.2	$	(0.4)	$	—	$	(106.8)	$	107.2
Adjustments to reconcile net income (loss) to net cash provided by (required by)operating activities
Depreciation and amortization	—		113.8		—		—		—		113.8
Deferred and noncurrent income tax charges (credits)	—		6.9		—		—		—		6.9
Accretion of asset retirement obligations	—		1.6		—		—		—		1.6
Pretax (gains) losses from sale of assets	—		(0.1)		—		—		—		(0.1)
Net (increase) decrease in noncash operating working capital	—		(3.6)		(0.1)		—		—		(3.7)
Equity in earnings of affiliates	(107.2)		0.4		—		—		106.8		—
Loss on early debt extinguishment	—		14.8		—		—		—		14.8
Other operating activities - net	—		11.1		—		—		—		11.1
Net cash provided by (required by) operating activities	—		252.1		(0.5)		—		—		251.6
Investing Activities
Property additions	—		(149.3)		(4.4)		—		—		(153.7)
Proceeds from sale of assets	—		2.4		—		—		—		2.4
Other investing activities - net	—		(0.7)		—		—		—		(0.7)
Net cash provided by (required by) investing activities	—		(147.6)		(4.4)		—		—		(152.0)
Financing Activities
Purchase of treasury stock	(139.1)		—		—		—		—		(139.1)
Borrowings of debt	—		693.7		—		—		—		693.7
Repayments of debt	—		(573.1)		—		—		—		(573.1)
Debt issuance costs	—		(3.1)		—		—		—		(3.1)
Early debt extinguishment costs	—		(10.4)		—		—		—		(10.4)
Amounts related to share-based compensation	—		(4.4)		—		—		—		(4.4)
Net distributions to parent	139.1		(144.3)		5.2		—		—		—
Net cash provided by (required) by financing activities	—		(41.6)		5.2		—		—		(36.4)
Net increase (decrease) in cash and cash equivalents	—		62.9		0.3		—		—		63.2
Cash, cash equivalents, and restricted cash at January 1	—		184.0		0.5		—		—		184.5
Cash, cash equivalents, and restricted cash at September 30	$	—	$	246.9	$	0.8	$	—	$	—	$	247.7

Consolidating Statement of Changes in Equity

CONSOLIDATING STATEMENT OF CHANGES IN EQUITY

(Millions of dollars)	Nine Months Ended September 30, 2020
Statement of Stockholders' Equity	Parent Company		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations		Consolidated
Common Stock
Balance as of December 31, 2019	$	0.5	$	—	$	0.1	$	—	$	(0.1)	$	0.5
Issuance of common stock	—		—		—		—		—		—
Balance as of March 31, 2020	0.5		—		0.1		—		(0.1)		0.5
Issuance of common stock	—		—		—		—		—		—
Balance as of June 30, 2020	0.5		—		0.1		—		(0.1)		0.5
Issuance of common stock	—		—		—		—		—		—
Balance as of September 30, 2020	$	0.5	$	—	$	0.1	$	—	$	(0.1)	$	0.5
Treasury Stock
Balance as of December 31, 2019	$	(1,099.8)	$	—	$	—	$	—	$	—	$	(1,099.8)
Issuance of treasury stock	5.2		—		—		—		—		5.2
Repurchase of treasury stock	(140.6)		—		—		—		—		(140.6)
Balance as of March 31, 2020	(1,235.2)		—		—		—		—		(1,235.2)
Issuance of treasury stock	—		—		—		—		—		—
Repurchase of treasury stock	—		—		—		—		—		—
Balance as of June 30, 2020	(1,235.2)		—		—		—		—		(1,235.2)
Issuance of treasury stock	3.3		—		—		—		—		3.3
Repurchase of treasury stock	(89.9)		—		—		—		—		(89.9)
Balance as of September 30, 2020	$	(1,321.8)	$	—	$	—	$	—	$	—	$	(1,321.8)
APIC
Balance as of December 31, 2019	$	1,188.8	$	578.8	$	52.0	$	87.5	$	(1,368.4)	$	538.7
Issuance of treasury stock	(5.7)		—		—		—		—		(5.7)
Amounts related to share-based compensation	—		(5.6)		—		—		—		(5.6)
Share-based compensation expense	—		2.8		—		—		—		2.8
Balance as of March 31, 2020	1,183.1		576.0		52.0		87.5		(1,368.4)		530.2
Issuance of treasury stock	—		—		—		—		—		—
Amounts related to share-based compensation	—		—		—		—		—		—
Share-based compensation expense	—		2.8		—		—		—		2.8
Balance as of June 30, 2020	1,183.1		578.8		52.0		87.5		(1,368.4)		533.0
Issuance of treasury stock	(3.3)		—		—		—		—		(3.3)
Amounts related to share-based compensation	—		(5.1)		—		—		—		(5.1)
Share-based compensation expense	—		5.4		—		—		—		5.4
Balance as of September 30, 2020	$	1,179.8	$	579.1	$	52.0	$	87.5	$	(1,368.4)	$	530.0

(Millions of dollars)	Nine Months Ended September 30, 2020
Statement of Stockholders' Equity	Parent Company		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations		Consolidated
Retained Earnings
Balance as of December 31, 2019	$	2,502.4	$	161.9	$	(1.0)	$	66.8	$	(1,367.2)	$	1,362.9
Cumulative effect of a change in accounting principle	—		1.1		—		—		—		1.1
Net income (loss)	89.3		89.3		(0.1)		—		(89.2)		89.3
Balance as of March 31, 2020	2,591.7		252.3		(1.1)		66.8		(1,456.4)		1,453.3
Net income (loss)	168.9		168.9		(0.2)		—		(168.7)		168.9
Balance as of June 30, 2020	2,760.6		421.2		(1.3)		66.8		(1,625.1)		1,622.2
Net income (loss)	66.9		66.9		(0.2)		—		(66.7)		66.9
Balance as of September 30, 2020	$	2,827.5	$	488.1	$	(1.5)	$	66.8	$	(1,691.8)	$	1,689.1
AOCI
Balance as of December 31, 2019	$	—	$	0.7	$	—	$	—	$	—	$	0.7
Other comprehensive income (loss)	—		(2.7)		—		—		—		(2.7)
Balance as of March 31, 2020	—		(2.0)		—		—		—		(2.0)
Net income (loss)	—		(0.5)		—		—		—		(0.5)
Balance as of June 30, 2020	—		(2.5)		—		—		—		(2.5)
Net income (loss)	—		0.4		—		—		—		0.4
Balance as of September 30, 2020	$	—	$	(2.1)	$	—	$	—	$	—	$	(2.1)

CONSOLIDATING STATEMENT OF CHANGES IN EQUITY

(Millions of dollars)	Nine Months Ended September 30, 2019
Statement of Stockholders' Equity	Parent Company		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations		Consolidated
Common Stock
Balance as of December 31, 2018	$	0.5	$	—	$	0.1	$	—	$	(0.1)	$	0.5
Issuance of common stock	—		—		—		—		—		—
Balance as of March 31, 2019	0.5		—		0.1		—		(0.1)		$	0.5
Issuance of common stock	—		—		—		—		—		—
Balance as of June 30, 2019	0.5		—		0.1		—		(0.1)		0.5
Issuance of common stock	—		—		—		—		—		—
Balance as of September 30, 2019	$	0.5	$	—	$	0.1	$	—	$	(0.1)	$	0.5
Treasury Stock
Balance as of December 31, 2018	$	(940.3)	$	—	$	—	$	—	$	—	$	(940.3)
Issuance of treasury stock	5.6		—		—		—		—		5.6
Repurchase of treasury stock	(13.3)		—		—		—		—		(13.3)
Balance as of March 31, 2019	(948.0)		—		—		—		—		(948.0)
Issuance of treasury stock	0.1		—		—		—		—		0.1
Repurchase of treasury stock	(16.8)		—		—		—		—		(16.8)
Balance as of June 30, 2019	(964.7)		—		—		—		—		(964.7)
Issuance of treasury stock	0.5		—		—		—		—		0.5
Repurchase of treasury stock	(109.0)		—		—		—		—		(109.0)
Balance as of September 30, 2019	$	(1,073.2)	$	—	$	—	$	—	$	—	$	(1,073.2)
APIC
Balance as of December 31, 2018	$	1,195.1	$	572.8	$	52.0	$	87.5	$	(1,368.4)	$	539.0
Issuance of treasury stock	(5.6)		—		—		—		—		(5.6)
Amounts related to share-based compensation	—		(4.1)		—		—		—		(4.1)
Share-based compensation expense	—		2.6		—		—		—		2.6
Balance as of March 31, 2019	1,189.5		571.3		52.0		87.5		(1,368.4)		$	531.9
Issuance of treasury stock	(0.1)		—		—		—		—		(0.1)
Amounts related to share-based compensation	—		(0.2)		—		—		—		(0.2)
Share-based compensation expense	—		2.8		—		—		—		2.8
Balance as of June 30, 2019	1,189.4		573.9		52.0		87.5		(1,368.4)		534.4
Issuance of treasury stock	(0.5)										(0.5)
Amounts related to share-based compensation	—		(0.1)		—		—		—		(0.1)
Share-based compensation expense	—		2.6		—		—		—		2.6
Balance as of September 30, 2019	$	1,188.9	$	576.4	$	52.0	$	87.5	$	(1,368.4)	$	536.4

(Millions of dollars)	Nine Months Ended September 30, 2019
Statement of Stockholders' Equity	Parent Company		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations		Consolidated
Retained Earnings
Balance as of December 31, 2018	$	2,181.8	$	172.9	$	(0.5)	$	66.8	$	(1,212.9)	$	1,208.1
Net income (loss)	5.3		5.3		(0.2)		—		(5.1)		5.3
Balance as of March 31, 2019	2,187.1		178.2		(0.7)		66.8		(1,218.0)		1,213.4
Net income (loss)	32.7		32.7		(0.1)		—		(32.6)		32.7
Balance as of June 30, 2019	2,219.8		210.9		(0.8)		66.8		(1,250.6)		1,246.1
Net income (loss)	69.2		69.2		(0.1)		—		(69.1)		69.2
Balance as of September 30, 2019	$	2,289.0	$	280.1	$	(0.9)	$	66.8	$	(1,319.7)	$	1,315.3
AOCI
Balance as of December 31, 2018	$	—	$	—	$	—	$	—	$	—	$	—
Other comprehensive income (loss)	—		—		—		—		—		—
Balance as of March 31, 2019	—		—		—		—		—		—
Other comprehensive income (loss)	—		—		—		—		—		—
Balance as of June 30, 2019	—		—		—		—		—		—
Other comprehensive income (loss)	—		—		—		—		—		—
Balance as of September 30, 2019	$	—	$	—	$	—	$	—	$	—	$	—