Selected Condensed Consolidating Financial Statements of Parent, Issuer, Guarantors and Non-Guarantors - Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 156.4	$ 151.6
Accounts receivable	2,061.7	2,193.2
Inventories	2,189.7	2,107.5
Other current assets	537.5	496.2
Assets held for sale	7.3	25.8
Total current assets	4,952.6	4,974.3
Property, plant and equipment, net	11,281.1	11,189.5
Goodwill	7,327.0	7,285.6
Intangibles, net	3,968.0	4,059.5
Restricted assets held by special purpose entities	1,272.7	1,274.3
Prepaid pension asset	257.2	224.7
Other assets	1,878.2	1,148.8
Total Assets	30,936.8	30,156.7
Current liabilities:
Current portion of debt	565.1	561.1
Accounts payable	1,781.0	1,831.8
Accrued compensation and benefits	375.7	470.4
Other current liabilities	725.0	571.8
Total current liabilities	3,446.8	3,435.1
Long-term debt due after one year	9,649.3	9,502.3
Pension liabilities, net of current portion	286.5	294.0
Postretirement benefit liabilities, net of current portion	164.1	162.1
Non-recourse liabilities held by special purpose entities	1,143.1	1,145.2
Deferred income taxes	2,891.7	2,878.0
Other long-term liabilities	1,513.0	1,053.9
Redeemable noncontrolling interests	1.8	1.9
Total stockholders’ equity	11,825.2	11,669.9	$ 11,603.7
Noncontrolling interests	15.3	14.3
Total equity	11,840.5	11,684.2	$ 11,615.5
Total Liabilities and Equity	30,936.8	30,156.7
Parent [Member]
Current Assets:
Investments in consolidated subsidiaries	12,219.7	11,973.6
Total Assets	12,219.7	11,973.6
Current liabilities:
Accrued compensation and benefits	0.2	0.3
Intercompany payables	394.3	303.4
Total current liabilities	394.5	303.7
Total stockholders’ equity	11,825.2	11,669.9
Total equity	11,825.2	11,669.9
Total Liabilities and Equity	12,219.7	11,973.6
Issuer [Member]
Current Assets:
Other current assets		1.2
Intercompany receivables	223.4	227.7
Total current assets	223.4	228.9
Intercompany notes receivable	154.9	155.0
Investments in consolidated subsidiaries	18,840.2	18,524.2
Other assets	69.6	67.8
Total Assets	19,288.1	18,975.9
Current liabilities:
Current portion of debt	127.0	135.3
Accounts payable	1.5	0.7
Other current liabilities	46.3	18.6
Intercompany payables	10.5
Total current liabilities	185.3	154.6
Long-term debt due after one year	6,609.3	6,608.0
Intercompany notes payable	636.3	636.3
Other long-term liabilities	12.9	12.9
Total stockholders’ equity	11,844.3	11,564.1
Total equity	11,844.3	11,564.1
Total Liabilities and Equity	19,288.1	18,975.9
Guarantor Subsidiaries [Member]
Current Assets:
Cash and cash equivalents	8.7	17.8
Accounts receivable	16.1	31.1
Inventories	266.0	254.3
Other current assets	8.6	11.8
Intercompany receivables	0.6
Total current assets	300.0	315.0
Property, plant and equipment, net	15.3	18.9
Goodwill	1,158.6	1,158.6
Intangibles, net	1,458.9	1,485.0
Intercompany notes receivable	145.8	156.9
Investments in consolidated subsidiaries	20,347.7	20,103.6
Other assets	232.5	185.3
Total Assets	23,658.8	23,423.3
Current liabilities:
Current portion of debt	107.5	108.9
Accounts payable	28.3	31.3
Accrued compensation and benefits	14.8	14.5
Other current liabilities	112.3	83.8
Intercompany payables	1,014.2	1,052.9
Total current liabilities	1,277.1	1,291.4
Long-term debt due after one year	1,979.3	1,982.9
Intercompany notes payable	2,390.5	2,390.5
Pension liabilities, net of current portion	143.8	147.6
Postretirement benefit liabilities, net of current portion	25.5	25.7
Deferred income taxes	252.3	278.9
Other long-term liabilities	178.5	131.2
Total stockholders’ equity	17,411.8	17,175.1
Total equity	17,411.8	17,175.1
Total Liabilities and Equity	23,658.8	23,423.3
Non-Guarantor Subsidiaries [Member]
Current Assets:
Cash and cash equivalents	147.7	133.8
Accounts receivable	2,076.3	2,201.7
Inventories	1,923.7	1,853.2
Other current assets	528.9	483.2
Intercompany receivables	1,205.5	1,128.6
Assets held for sale	7.3	25.8
Total current assets	5,889.4	5,826.3
Property, plant and equipment, net	11,265.8	11,170.6
Goodwill	6,168.4	6,127.0
Intangibles, net	2,509.1	2,574.5
Restricted assets held by special purpose entities	1,272.7	1,274.3
Prepaid pension asset	257.2	224.7
Intercompany notes receivable	3,026.8	3,026.8
Other assets	1,640.1	971.8
Total Assets	32,029.5	31,196.0
Current liabilities:
Current portion of debt	330.6	316.9
Accounts payable	1,781.9	1,839.4
Accrued compensation and benefits	360.7	455.6
Other current liabilities	566.4	469.4
Intercompany payables	10.5
Total current liabilities	3,050.1	3,081.3
Long-term debt due after one year	1,060.7	911.4
Intercompany notes payable	300.7	311.9
Pension liabilities, net of current portion	142.7	146.4
Postretirement benefit liabilities, net of current portion	138.6	136.4
Non-recourse liabilities held by special purpose entities	1,143.1	1,145.2
Deferred income taxes	2,703.4	2,675.2
Other long-term liabilities	1,321.6	909.8
Redeemable noncontrolling interests	1.8	1.9
Total stockholders’ equity	22,151.5	21,862.2
Noncontrolling interests	15.3	14.3
Total equity	22,166.8	21,876.5
Total Liabilities and Equity	32,029.5	31,196.0
Eliminations [Member]
Current Assets:
Accounts receivable	(30.7)	(39.6)
Intercompany receivables	(1,429.5)	(1,356.3)
Total current assets	(1,460.2)	(1,395.9)
Intercompany notes receivable	(3,327.5)	(3,338.7)
Investments in consolidated subsidiaries	(51,407.6)	(50,601.4)
Other assets	(64.0)	(76.1)
Total Assets	(56,259.3)	(55,412.1)
Current liabilities:
Accounts payable	(30.7)	(39.6)
Intercompany payables	(1,429.5)	(1,356.3)
Total current liabilities	(1,460.2)	(1,395.9)
Intercompany notes payable	(3,327.5)	(3,338.7)
Deferred income taxes	(64.0)	(76.1)
Total stockholders’ equity	(51,407.6)	(50,601.4)
Total equity	(51,407.6)	(50,601.4)
Total Liabilities and Equity	$ (56,259.3)	$ (55,412.1)