Summary of Significant Accounting Policies Schedule of New Accounting Pronouncements and changes in Accounting Principles (Policies)

12 Months Ended

Dec. 31, 2018

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]

The following table presents the effect of the adoption of Topic 606, ASU No. 2017-07, and other prior period reclassifications. The effect of these changes for each quarter of 2017 is presented in Note 17.

	Year Ended December 31, 2017									Year Ended December 31, 2016
	As Previously Reported			Adjustments**			Adjusted for New Standards			As Previously Reported		Adjustments**			Adjusted for New Standards
Sales	$	26,812,508		$	(257,945	)	$	26,554,563		$	23,825,261	$	(337,389	)	$	23,487,872
Cost of sales	23,455,169			(257,574		)	23,197,595			20,681,062		(337,512		)	20,343,550
Gross profit	3,357,339			(371		)	3,356,968			3,144,199		123			3,144,322
Operating expenses:
Selling, general, and administrative expenses	2,162,996			(951		)	2,162,045			2,052,863		(5,953		)	2,046,910
Depreciation and amortization	153,599			—			153,599			159,195		—			159,195
Loss on disposition of businesses, net	21,000			—			21,000			—		—			—
Restructuring, integration, and other charges	91,294			(16,706		)	74,588			73,602		(12,211		)	61,391
	2,428,889			(17,657		)	2,411,232			2,285,660		(18,164		)	2,267,496
Operating income	928,450			17,286			945,736			858,539		18,287			876,826
Equity in earnings of affiliated companies	3,424			—			3,424			7,573		—			7,573
Gain (loss) on investments, net	(14,231		)	7,654			(6,577		)	—		2,896			2,896
Loss on extinguishment of debt	59,545			—			59,545			—		—			—
Employee benefit plan expense	—			23,869			23,869			—		20,464			20,464
Interest and other financing expense, net	163,810			1,442			165,252			150,715		597			151,312
Income before income taxes	694,288			(371		)	693,917			715,397		122			715,519
Provision for income taxes	287,126			(585		)	286,541			190,674		57			190,731
Consolidated net income	407,162			214			407,376			524,723		65			524,788
Noncontrolling interests	5,200			—			5,200			1,973		—			1,973
Net income attributable to shareholders	$	401,962		$	214		$	402,176		$	522,750	$	65		$	522,815
Net income per share:
Basic*	$	4.53		$	0.01		$	4.54		$	5.75	$	—		$	5.75
Diluted*	$	4.48		$	—		$	4.48		$	5.68	$	—		$	5.68

* The sum of the as previously reported and as adjusted may not agree to totals, as presented, due to rounding.

** Topic 606 impacted sales and cost of sales. ASU No. 2017-07 and other reclassifications impacted operating and non-operating expenses.